Linked Open Data: an overview
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Iván Ruiz Rube presents an overview of Linked Open Data. He discusses how publishing structured data using open standards like RDF and SPARQL allows data to be interlinked and more useful. Ruiz Rube explains how to publish data as Linked Open Data using different patterns and how consuming Linked Data involves developing rich interfaces for humans and querying data for machines using SPARQL. The goal of Linked Open Data is to create new applications by linking open datasets on the web.
Linked Open Data: an overview
- 1. Linked Open Data: an overview Iván Ruiz Rube Departamento de Lenguajes y Sistemas Informáticos Universidad de Cádiz 16/12/2011 Hackaton 2011. OSLUCA. 1
- 2. Roadmap Introduction Publishing Data Consuming Data Conclusions 16/12/2011 Hackaton 2011. OSLUCA. 2
- 3. LINKED OPEN DATA: AN OVERVIEW INTRODUCTION 16/12/2011 Hackaton 2011. OSLUCA. 3
- 4. Introduction Huge amount of information A large number of information systems Big challenges: ◦ Data integration ◦ Data analysis 16/12/2011 Hackaton 2011. OSLUCA. 4
- 5. Need for open data Improvement of organizational transparency Public data Foster the research Promote the development of third-party system 16/12/2011 Hackaton 2011. OSLUCA. 5
- 6. Linked Open Data “A method of publishing structured data so that it can be interlinked and become more useful. …it extends web pages to share information in a way that can be read automatically by computers.”1 1Tim Berners-Lee 16/12/2011 Hackaton 2011. OSLUCA. 6
- 7. Resource Description Format Linked Data - The Story So Far http://publisher.org/Journals/ JournalSWIS title publishedIn http://w3c.org http://publisher.org/Papers/ director Paper12345 author http://w3.org/People/ Berners-Lee year type 2008 http://xmlns.com/foaf/ Person 16/12/2011 Hackaton 2011. OSLUCA. 7
- 8. RDF (sintaxis) <http://publisher.org/Papers/Paper12345> title "Linked Data - The Story So Far"; year "2008-01-01"; author <http://w3.org/People/Berners-Lee>; publishedIn <http://publisher.org/Journal/JournalSWIS> . <rdf:Description rdf:about="http://publisher.org/Papers/Paper12345"> <title>Linked Data - The Story So Far</title> <year>2008-01-01</year> <author rdf:resource="http://w3.org/People/Berners-Lee" /> <publishedIn rdf:resource="http://publisher.org/Journal/JournalSWIS" /> </rdf:Description> 16/12/2011 Hackaton 2011. OSLUCA. 8
- 9. Ontologies (vocabularies) “An ontology is an explicit and formal specification of a shared conceptualization1“ 1Tom Gruber 16/12/2011 Hackaton 2011. OSLUCA. 9
- 10. Linked Data Cloud 16/12/2011 Hackaton 2011. OSLUCA. 10
- 11. Is your Linked Open Data 5 Star? ★ Available on the web (whatever format), but with an open license ★★ Available as machine-readable structured data (e.g. excel instead of image scan of a table) ★★★ as (2) plus non-proprietary format (e.g. CSV instead of excel) ★★★★ All the above plus, Use open standards from W3C (RDF and SPARQL) to identify things, so that people can point at your stuff ★★★★★ All the above, plus: Link your data to other people’s data to provide context 16/12/2011 Hackaton 2011. OSLUCA. 11
- 12. LINKED OPEN DATA: AN OVERVIEW PUBLISHING DATA 16/12/2011 Hackaton 2011. OSLUCA. 12
- 13. How is your data currently stored? 16/12/2011 Hackaton 2011. OSLUCA. 13
- 14. How to publish Linked Data? The Story So Far JournalSemanticWeb LinkedData Berners-Lee W3C 2008 16/12/2011 Hackaton 2011. OSLUCA. 14
- 15. Publishing Linked Data Patterns 16/12/2011 Hackaton 2011. OSLUCA. 15
- 16. LINKED OPEN DATA: AN OVERVIEW CONSUMING DATA 16/12/2011 Hackaton 2011. OSLUCA. 16
- 17. Rich interfaces (for humans) 16/12/2011 Hackaton 2011. OSLUCA. 17
- 18. RDF Data (for machines) <http://voa3r.cc.uah.es/dataset/resource/organisationUnits/UAH> rdf:type cerif:OrganisationUnit ; rdfs:label "University of Alcala" ; cerif:acronym "UAH" ; foaf:homepage <http://www.uah.es> ; cerif:researchProjects <http://voa3r.cc.uah.es/dataset/resource/projects/Organic.Edunet> , <http://voa3r.cc.uah.es/dataset/resource/projects/Organic.Lingua> , <http://voa3r.cc.uah.es/dataset/resource/projects/VOA3R> ; cerif:members <http://voa3r.cc.uah.es/dataset/resource/person/Salvador_Sanchez> , <http://voa3r.cc.uah.es/dataset/resource/person/Miguel_Refusta> , <http://voa3r.cc.uah.es/dataset/resource/person/Luis_Torrico> . 16/12/2011 Hackaton 2011. OSLUCA. 18
- 19. RDF Data (for humans) 16/12/2011 Hackaton 2011. OSLUCA. 19
- 20. Querying RDF Data 16/12/2011 Hackaton 2011. OSLUCA. 20
- 21. Developing web mashups Internet Navigator File Favourites Help URL: http://mashup.org Data warehouse mashup 16/12/2011 Hackaton 2011. OSLUCA. 21
- 22. PUBLISHING LINKED DATA FROM RELATIONAL DATABASES CONCLUSIONS 16/12/2011 Hackaton 2011. OSLUCA. 22
- 23. Conclusions Web based on documents Web based on Data. Linked Data as a way for interchanging data between different datasets in the Web. RDF as a standard format to describe data. Main aim: Create new third-party applications using open linked data from LD systems. 16/12/2011 Hackaton 2011. OSLUCA. 23
- 24. References Linked Data: Evolving the Web into a Global Data Space ◦ http://linkeddatabook.com/ W3C Linking Open Data Project ◦ http://www.w3.org/wiki/SweoIG/TaskForces/C ommunityProjects/LinkingOpenData 16/12/2011 Hackaton 2011. OSLUCA. 24
- 25. Linked Open Data: an overview thanks Iván Ruiz Rube ivan.ruiz@uca.es 16/12/2011 Hackaton 2011. OSLUCA. 25