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Making Thesauri Work for the Semantic Web

Making Thesauri Work for the Semantic Web. Alistair Miles Brian Matthews Michael Wilson. Overview. Introduction Thesaurus Interchange Format (TIF) Thesaurus Tools. Slide 2. SWAD-Europe. Semantic Web Advanced Development for Europe Research & Development Demonstration & Dissemination

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Making Thesauri Work for the Semantic Web

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  1. Making Thesauri Work for the Semantic Web Alistair Miles Brian Matthews Michael Wilson

  2. Overview • Introduction • Thesaurus Interchange Format (TIF) • Thesaurus Tools Slide 2

  3. SWAD-Europe • Semantic Web Advanced Development for Europe • Research & Development • Demonstration & Dissemination • Partners: • CCLRC • HP Labs • ILRT • ERCIM (INRIA) • Stilo Slide 3

  4. TIF for the Semantic Web • RDF Schema • Concept-based • Extensible Slide 4

  5. TIF Overview Slide 5

  6. TIF Classes

  7. TIF Built-In Properties … Slide 6

  8. … Concept-Relation Slide 6

  9. … Concept-Equivalence Slide 6

  10. TIF Data <rdf:RDF xmlns="http://www.w3c.rl.ac.uk/2003/07/22-tif#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf=“http://www.w3.org/1999/02/22-rdf-syntax-ns#” xml:base=“http://www.rl.ac.uk/sophia/”> <Thesaurus rdf:about="GCL"> <dc:title>Government Category List</dc:title> <dc:description>List of categories used for government metadata.</dc:description> </Thesaurus> <Term rdf:about="GCL?term=A-levels"> <value>A-levels</value> </Term> <Concept rdf:about="GCL?concept=607"> <code>607</code> <preferred rdf:resource="GCL?term=Firearms"/> <nonPreferred rdf:resource="GCL?term=Gun%20licensing"/> <nonPreferred rdf:resource="GCL?term=Handguns"/> <broader rdf:resource="GCL?concept=564"/> <related rdf:resource="GCL?concept=598"/> <related rdf:resource=“GCL?concept=827"/> <inexact rdf:resource="GCL?concept=111"/> <partial rdf:resource="GCL?concept=222"/> </Concept> </rdf:RDF> Slide 7

  11. Term-Based Extension • TIF-Simple Slide 8

  12. TIF-S Built-In Properties Slide 9

  13. preferred Term Concept Term broader BT preferred Term Concept Term Generating TIF-S from TIF • TIF-S as derived relations • Mapping rules • Use Closed World Machine (CWM) Slide 10

  14. TIF Summary • RDF Schema • Concept-based • Mono- or Multi- lingual • Extensible framework of properties • Term-based extension (TIF-S) • Exploit strengths of both models Slide 11

  15. Thesaurus Tools • Low-level • Http server: ‘SophiaLite’ • Java API: ‘Thes’ • User-level • Thesaurus browser: ‘SophiaMultilingua’ Slide 12

  16. SophiaLite • Http thesaurus server • Http get parameters ?concept ?term ?data [ topconcepts / topterms / allconcepts / allterms ] • Return RDF thesaurus data Slide 13

  17. Servlet Container Sophia SophiaLite Architecture Http Client Http (params) Http (RDQL) Joseki Joseki Jdbc / http RDF Store RDF Files Slide 14

  18. Thes API Generic RDF API (Jena) RDF Store Thes Java API • Link to UML • Implementation: Slide 15

  19. SophiaMultilingua • Thesaurus Viewer • Demo • Leverage SW tools for powerful lightweight apps Slide 16

  20. Future Work • Using OWL for validation and inference • Thesaurus web service • Publish datasets • More user-level applications • Use existing thesauri to enhance web experience • Ontology migration Slide 17

  21. Information • Alistair Miles: a.j.miles@rl.ac.uk • TIF on the web: http://www.w3c.rl.ac.uk/SWAD/thesaurus/tif/tif.html • SWAD-Europe Thesaurus Activity: http://www.w3c.rl.ac.uk/SWAD/thesaurus.html Slide 18

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