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WESO MeTTeG 2011 Presentation Transcript

  • 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.  
  • 4. E-procurement Long Tail TED BOE (official bulletin of the Spanish Governement) BOPA (official bulletin of the Asturian Governement)
  • 5. Taking into account the multicultural and multilingual issues
  • 6. 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)?
  • 7. But clients do not know how to find suitable notices…Company Business Clients User
  • 8. “Semantic” support to the business user +Company Clients
  • 9. 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
  • 10. Structuring the public procurement notices and government classifications• CPV codes• NUTS codes• Total amount• Duration• Type of enterprise• Others..
  • 11. Preliminary Results/ d d Ws Z&KEhd^W
  • 12. Semantic-based Services Problem of«Query Expansion»depending on the kind of information variable
  • 13. ^ Z
  • 14. Methods of«Query Expansion»  / d Z > E  & > ^ ^ h , ^  Z
  • 15. 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)?
  • 16. cpv:45221111-3 NL Query… Ehd^  Z t >>KEE ppn:nutsCode ppn:hasDuration cpv:CodeIn2008 ppn:hasAmount org:classification ^D
  • 17. cpv:45221111-3 NL Applying Query Expansion… Ehd^  Ehd^ E> Ehd^ Ehd^  ppn:nutsCode ppn:hasDuration cpv:CodeIn2008 ppn:hasAmount org:classification ^D
  • 18. 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)) ). …}
  • 19. Resultshttp://purl.org/weso/moldeas/
  • 20. Jquery+Exhibit!
  • 21. Publishing linked data with WESO DESH & Pubby
  • 22. Graph explorationthrough SNORQL
  • 23. 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
  • 24. 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