Upload
collin-caldwell
View
217
Download
0
Embed Size (px)
DESCRIPTION
Linked Open Data Opportunities Make information public; Discover related datasets; Integrate datasets; Reuse knowledge; Discover new knowledge; 2014OWL - Jeronimo Eichler
Citation preview
Browsing Linked Data Graphs
PUC-Rio – DI
Aluno: Jeronimo Eichler
1 2014OWL - Jeronimo Eichler
Sumary Motivation Problems Approaches Mashpoint References
OWL - Jeronimo Eichler 2 2014
Linked Open Data Opportunities
Make information public; Discover related datasets;Integrate datasets;Reuse knowledge;Discover new knowledge;
2014OWL - Jeronimo Eichler
Web of Data
2014OWL - Jeronimo Eichler
ProblemAlthough a huge quantity of information is available on the Web, it is hard to end users to access Linked Data in a broader scenario.Users are generally confined in islands of information.Despite the Linked Data principles it is still a challenge to create simple interations to allow users to easily navigate beyond the current dataset.
2014OWL - Jeronimo Eichler
ApproachesCurrently, two approaches emerge to address this goal:(1)Using data-mapping approaches to allow
congureable interfaces to be quickly deployed over pre-selected aggregations of Linked Data:
Once deployed they create their own data silo.
2014OWL - Jeronimo Eichler
ApproachesCurrently, two approaches emerge to address this goal:(2) Using generic data browsers leting users explore
and navigate on arbitrary data. Generic representations - a one size ts all interface for data. Closely associated with the underlying RDF model
often is too ne grained for the casual user . requires transformations for finding suitable
representations.2014OWL - Jeronimo Eichler
ApproachesCurrently, two approaches emerge to address this goal:(2) Using generic data browsers leting users explore
and navigate on arbitrary data. Generic representations - a one size ts all interface for data. Closely associated with the underlying RDF model
often is too ne grained for the casual user . requires transformations for finding suitable
representations.2014OWL - Jeronimo Eichler
MashpointMashpoint is defined as a framework that allows
data-centric interfaces to be linked based on equivalent identifiers in their respective data sources, enable them to express their state based on these identifiers, and allow these identifiers to be passed as input from one application to another as a way of enabling navigation.
Mashpoint sees applications as a higher level lenses or views over graphs of data on the Web.
2014OWL - Jeronimo Eichler
Mashpoint - PrinciplesData-centric applications is seen as lens over some
data because it provides data viewed in a specific context. An specific view about some data.
If different applications have information about a specific set of objects, the user can go from one application to another in order to find new objects.
Thus, the framework must be aware of what applications know to suggest related ones.
2014OWL - Jeronimo Eichler
Mashpoint
2014OWL - Jeronimo Eichler
I have information about Earth, Saturn and
Jupiter
I know Earth and
Venus.
I know nothing!!
Mashpoint – Implem.The Mashpoint implementation consists of following
three parts: 1. The applications providing data-centric
information;2. A discovery service allowing applications to look
up other applications;
2014OWL - Jeronimo Eichler
ApplicationsAn application must address the following goals to
be integrated in Mashpoint: Use URIs; Provide data-centric features; Be able to receive multiple resources as input; Be able to select and represent multiple
resources as output;
2014OWL - Jeronimo Eichler
Discovery ServiceThe discovery service keeps a record about which
URI identifiers can be represented in which applications. Thus, applications therefore need to register themselves in the discovery service and "subscribe" their URI identiers.
Once registered, the application can request another applications that can take the current selection to the discovery.
2014OWL - Jeronimo Eichler
Thank you
15 2014OWL - Jeronimo Eichler
References
Popov, I.; Schraefel, MC; Correndo, G.; Hall, W.; Shadbolt, N. Interacting with the Web of Data through a Web of Inter-connected Lenses (2012).
Popov, I.; Schraefel, MC; Hall, W.; Shadbolt, N. Connecting the Dots: A Multi-pivot Approach to Data Exploration, ISWC-11 (2011).
16 2014OWL - Jeronimo Eichler