linked data and the semantic web
DESCRIPTION
This presentation describes how we move forward to the web of data.TRANSCRIPT
“IT’S THE DATA STUPID..!”
[email protected] UNIVERSITY AND RESEARCH CENTRE
WHAT IS OPEN DATA?Is a webservice Open Data?
• W3C “The Web services architecture is an interoperability architecture”
©esri.com
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”
www 20 years!
OPEN..OPENER...!
April 2011
★ Available with open license
★★ Machine readable
★★★ Machine readable without proprietary format
★★★★ URI’s for reference
★★★★★ Link your data to other data
FROM WWW..TO WEB OF DATA
★ AVAILABLE WITH OPEN LICENSE
Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
★★ MACHINE READABLE
Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
★★★ 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/
SO...API and web service are max ★★★ open data according to Tim Berners-Lee..But ..limited access to data itselfUhh..does it matter..?
HOW ..
RELATIONAL DATASTRUCTURE
NETWORK DATASTRUCTURE(SEMANTIC WEB)
1
2
1
3
2
3 triples (triple store)
Publication
Organisation
Author
Research Area
Title
writtenBy
hasTitle
worksFor
hasResearchAreaPlants
studyObject
“Trace elements in soils and plants”
Book187625
Bunte, F
Ornamentals
Bougainvillea
Wageningen UR
Book187626
“Reduced VAT rates for flowers and plants : situation 2010"
Kabata-Pendias, A.
Aconitum
Plant Composition
Philips
Country
growsIn Italy
China
Carex flacca
The Netherlands
Iceland
France
Utrecht University
Linked Data (triples)
LINKED DATA (3D)
DATA WEB ARCHITECTUREData storage via XML (RDF) network data structure Every element has unique ID (URI)HTTP transport protocol -> linkable URLs
1. http://library.wur.nl/publications/Book1876252. http://library.wur.nl/writtenBy3. http://library.wur.nl/authors/BunteF
LINKED DATA
Linked Data is here!
http://www.bbc.co.uk/blogs/bbcinternet/2010/07/bbc_world_cup_2010_dynamic_sem.html
..if Author worksFor Organisation ofType University thenAuthor hasProfession Academic
Lieke
WURUniversity
Academic
INTELLIGENT WEB
inferred: Lieke hasProfession Academic
MY PROJECTS
Linked data analysis & reasoningLinked data demonstratorWUR library: authors and publications Linked Open Data
Soon:With Geonovum: Geo Linked Open Data
Thank You AttentionforYour