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Presentation by Francesca Di Donato of Linkedopencamera.it at "Open data: dati, conoscenza, valore", Topix conference, Turin, 3 Dec. 2010.

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  1. 1. From “Open Camera” http://servizi.radicalparty.org/freshinstall/cameraspese/tutte
  2. 2. To LinkedOpenCamera http://www.linkedopencamera.it/
  3. 3. Why linked data?
  4. 4. your web site Data is less valuable when siloed
  5. 5. A paradox as a premisePlato Meno, XIV 80d–e/81a And how will you enquire, Socrates, into that which you do not know? What will you put forth as the subject of enquiry? And if you find what you want, how will you ever know that this is the thing which you did not know? I know, Meno, what you mean; but just see what a tiresome dispute you are introducing. You argue that man cannot enquire either about that which he knows, or about that which he does not know; for if he knows, he has no need to enquire; and if not, he cannot; for he does not know the very subject about which he is to enquire.
  6. 6. Anamnesys: a myth as an answerPlato Meno, XIV 81c-d “ Seeing then that the soul is immortal and has been born many times, and has beheld all things both in this world and in the nether realms, she has acquired knowledge of all and everything; so that it is no wonder that she should be able to recollect all that she knew before about virtue and other things. For as all nature is akin, and the soul has “ learned all things, there is no reason why we should not, by remembering but one single thing—an act which men call learning—discover everything else, if we have courage and faint not in the search; since, it would seem, research and learning are wholly recollection.
  7. 7. Value is in context Thus, what matters is
  8. 8. linking
  9. 9. Web of Documents HyperlinksFor humansFor machines X
  10. 10. semantics is hidden, only human readerscan extract it from documents
  11. 11. Web of Data Linked Open Data HyperlinksFor humans same as agrees cites explainsFor machines cites Semantic Links RDF Data RDF Data RDF Data RDF Data
  12. 12. Linked Data becauseSomething more of “Open Data” :-)Formats and query languages standard and flexibleData ready for the Semantic WebAnyone can say anythink on anything and “link”... mash up/cross data with other data... added value for new users (citizens, SMEs)
  13. 13. Linked Data cloud, Sept 2010
  14. 14. Linked Data cloud, Sept 2010 ....More than 15 billions triples
  15. 15. Linked data projectsUK govUS govMunicipalities of Toronto, London, Zaragoza, San FranciscoBBCNYTLibrary of CongressGerman National LibraryEuropeanaGoogleFacebookYahoo....
  16. 16. LinkedOpenCamerahttp://www.linkedopencamera.it/ Just an example Raw data now! PSI data free to all for any use Not a LOD application, but a LOD source Re-use of standard ontologies Data Visualization: Faceted browsing
  17. 17. Data Model (simplified) Contratto Ristorazione Locazioni e Oneri Condominiali tipo tipo settore settore Ristorazione Self Service Seminario Locazione Marini 1 ammontare ammontare fornitore fornitore 1,100,000 Euro 13,269,346.40 Euro Milano 90 s.r.l............... regione sociale sede legale address ? Visure Camerali Corso del Rinascimento 19, RM Via Ariosto 3, RM
  18. 18. How it was born works for works for works for presented at founder founder founderworks for uses data of uses data of founder works for works for
  19. 19. Next StepsRaw data now!(new fresh data)CollaborationsFunding/Donations
  20. 20. Thank you!
  21. 21. Thank you!CREDITSAUTHORFrancesca Di Donato <didonato@sp.unipi.it>PHOTOSFlickr / Silo Antelope / ken mcownFlickr / Menu Board / LexnGerTHANKSChristian Morbidoni, Michele Barbera, Giulio Andreini, Emanuela Minuto