Introduction to the semantic web

Introduction to the semantic web

and linked data

The “regular” Webis a web of documents

The “semantic web” is a web of data

Berkeley

located inCalifornia

longitude

latitude

W 122° 16' 21''

N 37° 52' 17''

Here’s a picture of my dog in

K Hosseini

Kite Runner

Riverhead Publishing

D Benioff

ISBN:1594480001

M Forster

is author ofhas subject

Afghanistan

publishedby

adapted as screenplay by

made into movie

car123

red

Ford

Mustang

2-door

model

color

make

doors

Bob787

purchased by purchase price

pDate

purchase event72ElRioFord Mary88

purchase event142

Pfrom

Purchased from2006-07-02

$22,310

$7,250

“This is a great car!”Car&Driverreviews

2011-02-03

Things and Strings

Semantic Web Basics

thing thingrelationship

Moby Dick

Melvillewritten by

Moby Dick

Melvillewritten by

identifier

Moby Dick

Melvillewritten by

Uniform resource identifier

URI

Moby Dick

Melvillewritten by

Uniform resource identifier

URI

Moby Dick

Melvillewritten by

“Herman Melville”

URI

string

http://www.worldcat.org/oclc/474017053 http://viaf.org/viaf/27068555

http://purl.org/dc/terms/creator

WorldCat URI for book “Moby Dick”

http://www.worldcat.org/oclc/474017053 http://viaf.org/viaf/27068555

http://purl.org/dc/terms/creator

Dublin Core URI for element “creator”

http://www.worldcat.org/oclc/474017053 http://viaf.org/viaf/27068555

http://purl.org/dc/terms/creator

VIAF URI for person “Herman Melville”

http://www.worldcat.org/oclc/474017053 http://viaf.org/viaf/27068555

http://purl.org/dc/terms/creator

http://www.worldcat.org/oclc/474017053

http://purl.org/dc/terms/creator

http://www.worldcat.org/oclc/474017053 http://viaf.org/viaf/27068555

http://purl.org/dc/terms/creator

http://www.worldcat.org/oclc/474017053

http://purl.org/dc/terms/creator

“Herman Melville”

“things and strings”id:1234 id:abcd

id:3n5bid:$%^&

“Herman Melville”

“things and strings”id:1234 id:abcd

id:3n5bid:$%^&

“Herman Melville”

http://en.wikipedia.org/Herman_Melville

“label”

“things and strings”id:1234 id:abcd

id:3n5bid:$%^&

“Herman Melville”

http://en.wikipedia.org/Herman_Melville

label

http://en.wikiipedi.or

g/New_York_City

birthPlace

“New York City”label

Exercise: Things and Strings

• This is a dog named Dewey.• Dewey is a golden retriever.• Dewey is 9 years old.• Dewey’s birthday is 12-25• Dewey was born in 2003

• Dewey lives in Berkeley.• Berkeley is in California.• The University of California is in

Berkeley

EndIntroduction to the Semantic Web