This presentation describes how we move forward to the web of data.

1. “IT’S THE
DATA
STUPID..!”
LIEKE.VERHELST@WUR.NL
WAGENINGEN UNIVERSITY AND RESEARCH CENTRE

2. WHAT IS OPEN DATA?
Is a webservice Open Data?
• W3C “The Web services architecture is an interoperability
architecture”
©esri.com

3. WHAT IS OPEN DATA?
Is an API Open Data?
• Wikipedia: “An application programming interface (API) is
a particular set of rules ('code') and specifications that
software programs can follow to communicate with each
other. It serves as an interface between different software
programs”

6. www 20 years!

7. OPEN..OPENER...!
April 2011

8. FROM WWW..TO WEB OF DATA
★ Available with open license
★★ Machine readable
★★★ Machine readable without proprietary format
★★★★ URI’s for reference
★★★★★ Link your data to other data

9. ★ AVAILABLE WITH OPEN LICENSE
Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/

10. ★★ MACHINE READABLE
Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/

11. ★★★ MACHINE READABLE
WITHOUT PROPRIETARY FORMAT
"Temperature forecast for Galway, Ireland",
"Day","Lowest Temperature (C)"
"Saturday, 13 November 2010",2
"Sunday, 14 November 2010",4
"Monday, 15 November 2010",7
Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/

12. SO...
API and web service are max ★★★ open data according to
Tim Berners-Lee..
But ..limited access to data itself
Uhh..does it matter..?

13. HOW ..

15. RELATIONAL DATASTRUCTURE

16. NETWORK DATASTRUCTURE
(SEMANTIC WEB)
2
1
3
1
2
3 triples (triple store)

17. Ornamentals
Plant Composition
Research Area
Carex flacca
Bougainvillea
studyObject
Aconitum France
hasResearchArea Iceland
Bunte, F Plants
The Netherlands
Kabata-Pendias, A.
growsIn Italy
China
Author
Country
Book187625 writtenBy
worksFor
Book187626
Utrecht University
Publication Philips
Wageningen UR
Organisation
hasTitle
“Reduced VAT rates for flowers and plants : situation 2010"
“Trace elements in soils and plants”
Linked Data (triples)
Title

18. LINKED DATA (3D)

19. DATA WEB ARCHITECTURE
Data storage via XML (RDF) network data structure
Every element has unique ID (URI)
HTTP transport protocol -> linkable URLs
1. http://library.wur.nl/publications/Book187625
2. http://library.wur.nl/writtenBy
3. http://library.wur.nl/authors/BunteF

20. LINKED DATA

21. http://www.bbc.co.uk/blogs/bbcinternet/2010/07/bbc_world_cup_2010_dynamic_sem.html

22. INTELLIGENT WEB
Lieke
University
Academic WUR
..if Author worksFor Organisation ofType University then
Author hasProfession Academic
inferred: Lieke hasProfession Academic

23. MY PROJECTS
Linked data analysis & reasoning
Linked data demonstrator
WUR library: authors and publications Linked Open Data
Soon:
With Geonovum: Geo Linked Open Data

24. forYour
Thank You Attention