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WESO MeTTeG 2011

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Presentation at MeTTeG 2011.

Presentation at MeTTeG 2011.

Published in: Business, Technology
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  • 1. Innovative services to ease the access to the public procurement notices using linking open data and advanced methods based on semantics José María Álvarez Rodríguez WESO-Universidad de Oviedo http://purl.org/weso/moldeas/ 5th International Conference on Methodologies, Technologies and Tools enabling e-Government Camerino (Italy) 30th of JuneCode: TSI-020100-2010-919
  • 2. ObjectiveCreation of a pan-european e-procurement platform
  • 3. E-procurement Long Tail TED BOE (official bulletin of the Spanish Governement) BOPA (official bulletin of the Asturian Governement)
  • 4. Taking into account the multicultural and multilingual issues
  • 5. To Be Able to answer to… Which public procurement notices arerelevant to Dutch companies (only SMEs) that want to tender for contracts announced by local authorities with a total value lower than 170K € to procure “Road bridge construction work” and a two year duration in the Dutch- speaking region of Flanders (Belgium)?
  • 6. But clients do not know how to find suitable notices…Company Business Clients User
  • 7. “Semantic” support to the business user +Company Clients
  • 8. Structuring public procurement notices d Providing new semantic- based services yD Z ^ ^ ^ D DK WKW LOD enrichmentK W ^ Ws Z Easing the access to the published data using theEhd^ LOD approach Transforming government classifications
  • 9. Structuring the public procurement notices and government classifications• CPV codes• NUTS codes• Total amount• Duration• Type of enterprise• Others..
  • 10. Preliminary Results/ d d Ws ZKEhd^W
  • 11. Semantic-based Services Problem of«Query Expansion»depending on the kind of information variable
  • 12. ^ Z
  • 13. Methods of«Query Expansion» / d Z E ^ ^ h , ^ Z
  • 14. Remembering… Which public procurement notices arerelevant to Dutch companies (only SMEs) that want to tender for contracts announced by local authorities with a total value lower than 170K € to procure “Road bridge construction work” and a two year duration in the Dutch- speaking region of Flanders (Belgium)?
  • 15. cpv:45221111-3 NL Query… Ehd^ Z t KEE ppn:nutsCode ppn:hasDuration cpv:CodeIn2008 ppn:hasAmount org:classification ^D
  • 16. cpv:45221111-3 NL Applying Query Expansion… Ehd^ Ehd^ E Ehd^ Ehd^ ppn:nutsCode ppn:hasDuration cpv:CodeIn2008 ppn:hasAmount org:classification ^D
  • 17. Example of SPARQL querySELECT DISTINCT * WHERE { ?ppn rdf:type http://purl.org/weso/ppn/def#ppn. ?ppn org:classification http://purl.org/organizations#SME ?ppn ppn:nutsCode ?nutsCode. FILTER(?nutsCode = nuts:B3 ... ) . ?ppn cpv:codeIn2008 ?cpvCode. FILTER(? cpvCode = cpv:45221111-3 ... ) . ?ppn dc:identifier ?id. ?ppn dc:date ?date . ? ppn ppn:hasAmount ?amount. FILTER ( (xsd:double(?amount) = xsd:long(170,000)) (xsd:double(?amount) = xsd:long(200,000)) ). ?ppn ppn:hasDuration ?duration. FILTER ( (xsd:long(?duration) = xsd:long(2)) (xsd:long(?duration) = xsd:long(3)) ). …}
  • 18. Resultshttp://purl.org/weso/moldeas/
  • 19. Jquery+Exhibit!
  • 20. Publishing linked data with WESO DESH Pubby
  • 21. Graph explorationthrough SNORQL
  • 22. Evaluation and Further Steps• Test ranking functions to sort out results• Validation (“pedantic”) of the published data• Tracking organizations activity• Evaluation of the improvement with regards to the legacy system
  • 23. Innovative services to ease the access to the public procurement notices using linking open data and advanced methods based on semantics José María Álvarez Rodríguez WESO-Universidad de Oviedo http://purl.org/weso/moldeas/ 5th International Conference on Methodologies, Technologies and Tools enabling e-Government Camerino (Italy) 30th of JuneCode: TSI-020100-2010-919

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