Embed Size (px)
Citation preview
Up and running with Wikidata
EmwNew York City Wikidata workshop
2014-12-14
Wikidata is a free linked database that can be read and edited by
humans and machines
Wikidatas goals
Centralize interwiki links Centralize infoboxes Provide an interface for rich queries
Structure the sum of all human knowledge
What youll learn from this talk
How to edit Wikidata
How to classify
Ideas for small projects
Wikidata vocabulary
Where to find things
Awesome tools
Elements of a Wikidata statement
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Wikidata is a free linked database that can be read and edited by
humans and machines
Wikidatas goals
Centralize interwiki links Centralize infoboxes Provide an interface for rich queries
Structure the sum of all human knowledge
What youll learn from this talk
How to edit Wikidata
How to classify
Ideas for small projects
Wikidata vocabulary
Where to find things
Awesome tools
Elements of a Wikidata statement
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Wikidatas goals
Centralize interwiki links Centralize infoboxes Provide an interface for rich queries
Structure the sum of all human knowledge
What youll learn from this talk
How to edit Wikidata
How to classify
Ideas for small projects
Wikidata vocabulary
Where to find things
Awesome tools
Elements of a Wikidata statement
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
What youll learn from this talk
How to edit Wikidata
How to classify
Ideas for small projects
Wikidata vocabulary
Where to find things
Awesome tools
Elements of a Wikidata statement
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Elements of a Wikidata statement
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Example New York City (Q60)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Items and properties
Each item and property has its own page
Itemsndash Represent subjects Douglas Adams Challenger disasterndash Have identifiers like Q42 Q921090ndash 12906291 items
Propertiesndash Represent attribute names occupation has causendash Have identifiers like P106 P828ndash 1329 properties
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Statements and claims Claims
ndash Claims are ldquotripletsrdquo
Formally subject predicate object In Wikidata item property value Example Douglas Adams occupation author
Statements
ndash A claim is only part of a statement
ndash Statements also include
References Ranks
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Qualifiers ranks references
Qualifiersndash Qualifiers are properties used on claims rather than itemsndash ldquoYonkers population 12733 at time (P585) 1860rdquo
Ranksndash Preferred normal deprecatedndash Useful to mark outdated claims
Referencesndash Source of claim provenancendash ldquo stated in (P248) 1860 United States Censusrdquo
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
More on Wikidata vocabulary
httpswwwwikidataorgwikiWikidataGlossary
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Wikipedia articles have a Wikidata item link in the left navigation panel
Finding Wikidata items
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Wikidata search is quick and effective
Instant search suggests items that have labels or aliases matching your keyword
Finding Wikidata items
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Search by label
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Search by alias ldquoflurdquo -gt influenza
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Finding properties
Is there a property for ldquonumber of windowsrdquo What was the ID of that property again
Searchndash In main site search box prefix search term with ldquoPrdquondash ldquoPnumber ofrdquo ldquoPoccupationrdquondash Instant search doesnt work for properties only items
Browsendash httpswwwwikidataorgwikiWikidataList_of_properties
^ bookmark this
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Lets edit Wikidata
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Walking through edits for
Yonkers New York
httpswwwwikidataorgwikiQ128114
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Yonkers TODO
httpswwwwikidataorgwikiQ128114
population (P1082) claims for historical table in httpsenwikipediaorgwikiYonkers_New_YorkDemographics
Include references ldquo1860 United States Censusrdquo etc
To add to item from inbofox
ndash head of government (P6) office held by head of government (P1313)
ndash date of foundation or creation (P571)
ndash ZIP code (P281)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Area Population density
Properties with units (km^2 peoplekm^2 $) are not yet possible
ldquoUnitsrdquo datatype in development
httpsphabricatorwikimediaorgT65722
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Tools
ndash Querying Autolist by Magnus Manske httptoolswmflabsorgautolistautolist1html
ndash Batch editing Widar by Magnus Manske httpstoolswmflabsorgautolist
ndash Software framework Wikidata Toolkit by Markus Kroetzsch et al httpswwwmediawikiorgwikiWikidata_Toolkit httpsgithubcomWikidataWikidata-Toolkit
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Querying in Wikidata
List of politicians who died of a heart attack
Pseudo-query
occupation politician AND cause of death heart attack
occupation P106
politician Q82955
cause of death P509
heart attack Q12152
Wikidata query in Autolist
claim[10682955] AND claim[50912152]
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
httptoolswmflabsorgautolistautolist1htmlq=claim[10682955]20AND20claim[50912152]
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Classification on Wikidata
Taxonomy of knowledge
Enables powerful inference novel applications
Interesting philosophical design and engineering issues
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Tree of Porphyry
UserVoiceOfTheCommons CC-BY-SA 30
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Classes and instances
Plato is a human is a animal
Plato instance of human subclass of animal
Instance concrete object individual
Class abstract object
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Classification on Wikidata
instance of (P31)ndash rdftype in RDF and OWL
ndash 11930243 usages
ndash Most popular Wikidata property
subclass of (P279)ndash ldquoall instances of A are also instances of Brdquo
ndash rdfssubClassOf in RDF and OWL
ndash 170571 usages
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Examples USS Nimitz instance of Nimitz-class aircraft carrier
Nimitz-class aircraft carrier subclass of aircraft carrier
2012 Cannes Film Festival instance of Cannes Film Festival
Cannes Film Festival subclass of film festival
an individual charm quark instance of charm quark
charm quark subclass of quark^ Many ldquoleaf nodesrdquo in Wikidatas taxonomic hierarchy are not instances (There are no items about individual quarks on Wikidata)
httpswwwwikidataorgwikiHelpBasic_membership_properties
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Bad smells
Item has many instance of or subclass of claims
Items typically satisfy a huge number of instance of claims Fido instance of dog Fido instance of English Pointer Fido instance of faithful animal hellip
Solution use one class for instance of put other class knowledge into normal properties
Fido instance of dog Fido breed English Pointer Fido known for faithfulness
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Bad smells
subclass of claim that is nonsensical when interpreted as ldquoAll instances of A are also instances of Brdquo
Exampledog subclass of pet
But not all dogs are pets
feral dog subclass of dog trueferal dog subclass of pet false dog subclass of pet false
Solution put ldquopetrdquo knowledge about dogs into claim that does not apply to all instances of dog Eg ldquodog has role petrdquo (Has role would not be transitive Also needed someall quantifier)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Classification on Wikidata
Last but not least part of (P361)ndash Third basic membership propertyndash Top-level ldquopart-wholerdquo relation
Instance of subclass of and part of are all transitive
Transitive relation
A subclass of B
B subclass of C
A subclass of C
httpswwwwikidataorgwikiHelpBasic_membership_properties
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
Ideas for small projects
Add data about towns and citiesndash population (P1082)
ndash head of government (P6)
Add medical knowledge about historical figures ndash medical condition (P1050)
ndash cause of death (P509)
ndash manner of death (P1196)
Add cultural knowledge about works of artndash instance of (P31)
ndash creator (P170)
ndash material used (P186)
ndash collection (P195)
![Wikimania 2016 Maarten Dammers [[User:Multichill]]...Welcome to Wikidata, Spinster! Wikidata is a tree knowledge base that you can edit! It can be WIKIDATA Hi Spinster! I am Iñaki](https://img.pdfslide.us/doc/110x75/5f0b821d7e708231d430dd70/wikimania-2016-maarten-dammers-usermultichill-welcome-to-wikidata-spinster.jpg)
