Linked Open Data

Explaining Linked Open Data and what is in it for the Flemish government at the consortium of companies delivering services to the Flemish Goverment of the Flemish ICT organisation (V-ICT-OR)

Transcript

1. Linked Data Pieter Colpaert en Laurens De Vocht pieter.colpaert@ugent.be en laurens.devocht@ugent.be
2. Once, this was great data
3. Linked Data what? Because it’s impossible to store all the world’s knowledge on 1 machine…
4. An example Earth is the same as The world Earth is a Planet The world has population 7.152 billion Machine 1 Machine 2 Machine 3 World Wide Web And a lot more facts And a lot more facts And a lot more facts
5. World Wide Web An example Earth is the same as The world Earth is a Planet The world has population 7.152 billion Machine 1 Machine 2 Machine 3
6. name type same as Population Earth Planet The World 7.125*109 The World Planet Earth 7.125*109 { “Earth” : { “type” : “Planet”, “same as” : “The World”, “population” : “7.125*109” } } <Earth> <type>Planet</type> <sameas>The World</sameas> <population>7.125*109</population> </Earth> <Earth> <type> <Planet> ; <sameas> “The World” ; <population> “7.125*109” . Table / CSV / Spreadsheet JSON XML triples Nothing new… Here’s the answer serialized in different formats
7. Problem Earth is a Planet How do we make sure “Earth” means planet Earth on another machine as well? semantic interoperability and the relation “is a”? and “Planet”?
8. Solution? http://dbpedia.org/resource/Earth http://www.w3.org/1999/02/22-rdf-syntax-ns#type http://dbpedia.org/ontology/Planet Uniform Resource Identifiers (URIs)
9. Solution! Linked Open Data cloud
10. So... How do we start publishing data on the Web?
11. 5 stars of Linked Open Data What state is your data in? 1. Open Data license
12. data.OpenDataForum.info 1. Open Data license
13. 5 stars of Linked Open Data 2. Machine Readable
14. 5 stars of Linked Open Data 3. Open Format (CSV, JSON, ...)
15. TheDataTank.com: getting the best out of every star
16. 5 stars of Linked Open Data 4. Use URIs (RDF)
17. Add links in your data with rml.io
18. 5 stars of Linked Open Data 5. Link your datasets to others
19. Integrated at data.opendataforum. info Time check?
20. Okay… and now? Let’s http://ewi.mmlab.be/query the Web
21. Questions?