NKOS 2003

Making Thesauri Work for the Semantic Web: 

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

Overview: 

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

SWAD-Europe: 

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

TIF for the Semantic Web: 

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

TIF Overview: 

TIF Overview Slide 5

TIF Classes: 

TIF Classes

TIF Built-In Properties …: 

TIF Built-In Properties … Slide 6

… Concept-Relation: 

… Concept-Relation Slide 6

… Concept-Equivalence: 

… Concept-Equivalence Slide 6

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> TIF Data Slide 7

Term-Based Extension: 

Term-Based Extension TIF-Simple Slide 8

TIF-S Built-In Properties: 

TIF-S Built-In Properties Slide 9

Generating TIF-S from TIF: 

Generating TIF-S from TIF TIF-S as derived relations Mapping rules Use Closed World Machine (CWM) Slide 10

TIF Summary: 

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

Thesaurus Tools: 

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

SophiaLite: 

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

SophiaLite Architecture: 

SophiaLite Architecture Slide 14 Joseki RDF Store Http Client Http (params) Http (RDQL) Jdbc / http RDF Files Joseki

Thes Java API: 

Thes Java API Link to UML Implementation: Slide 15

SophiaMultilingua: 

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

Future Work: 

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

Information: 

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