Metadata first, ontologies second

Towards a solution to extract knowledge from the social web (“metadata first, ontologies second”) Project Collaborative Ontology Building System (CollOnBus) INTEK Nets 2005-2007 Aitor Almeida, Borja Sotomayor, Joseba Abaitua , Diego Lopez de Ipiña

Social web: source of knowledge ,[object Object],[object Object],[object Object],[object Object],[object Object]

Related work (since 2006) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Which knowledge representation model? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Crowds tagging pictures Aitor Almeida Borja Sotomayor Diego López de Ipiña

Crowd-sharing of tags ,[object Object],[object Object]

Mapping folksonomies into tag clusters ,[object Object],[object Object],[object Object]

Tag clustering ,[object Object],[object Object]

Should we map them into ontologies?

Better mapping 1st into metadata

Metadata vs ontologies ,[object Object],[object Object],[object Object],[object Object],[object Object]

Better mapping 1st folksonomies into metadata structures

Dublin Core Metadata Initiative http://jodi.tamu.edu/Articles/v02/i02/Greenberg/metadataform.gif

Dublin Core Metadata Initiative

Dublin Core Metadata Inicitive

Our mapping tool: folk2onto (? folk2meta) designed by Borja Sotomayor

folk2onto: Tag Distiller ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TAG clouds from del.icio.us ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TAG clouds from Technorati ,[object Object],[object Object]

TAG clouds from Technorati ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tagged URL at Technorati ,[object Object],[object Object],[object Object]

semantic relations in WordNet ,[object Object]

TAG filtering algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TAG filtering algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TAG XML file ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TAG file without senses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

WordNet’s sense sets ,[object Object],[object Object],[object Object]

folk2onto: Tag Mapper ,[object Object],[object Object],[object Object]

folk2onto: Dublin Core ,[object Object],[object Object],[object Object],[object Object],[object Object]

folk2onto: mapping formulae ,[object Object],[object Object],[object Object]

folk2onto: file mapping ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

folk2onto: 6 tests (A-F) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

folk2onto: tests output 278 (%12.8) 1894 (%87.2) F 823 (%37.9) 1349 (%62.1) E 680 (%31.3) 1492 (%68.7) D 973 (%44.8) 1199 (%55.2) C 578 (%26.6) 1594 (%73.4) B 1466 (%67.5) 706 (%32.5) A Erroneous synsets Correct synsets Experiment

Open issues ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

That was all about CollOnBus/folk2onto ,[object Object],[object Object]

Metadata first, ontologies second

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Metadata first, ontologies second