DBPedia is a project that extracts structured information from Wikipedia and makes it available on the web. It uses PHP to extract information and convert it into RDF format, with RDF providing a standardized data model. SPARQL is then used to query the resulting RDF database. The DBPedia database contains information extracted from over 6 million Wikipedia pages in over 100 different languages.

1. DBPedia ProjectPierre MasureLaurent Kalambayi

2. [OBJECTIVE]Whatcanit do?DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives2Pierre Masure | Web technology: DBPedia Project

3. Knowledge bases[CONTEXT]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives3Pierre Masure | Web technology: DBPedia Project

4. [TOOL]To extractstructured informationDBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives4Pierre Masure | Web technology: DBPedia Project

5. [Whodevelopsit ?] DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives5Pierre Masure | Web technology: DBPediaProject

6. [Who uses DBPedia ?] DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives6Pierre Masure | Web technology: DBPediaProject

7. [Status]How bigisDBPedia ? DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives7Pierre Masure | Web technology: DBPediaProject

8. [Whodoesitwork?] DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives8Pierre Masure | Web technology: DBPedia Project

9. [Working: which cases?] DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives9Pierre Masure | Web technology: DBPedia Project

10. [From brute data to RDF]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives10Pierre Masure | Web technology: DBPedia ProjectWikipedia:

11. [RDF: Basics]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives11Pierre Masure | Web technology: DBPedia ProjectResource Description Framework (RDF):a language for representing information about resources in the World Wide WebRDF is based on the idea of identifying things using Web identifiers (called Uniform Resource Identifiers, or URIs)

12. [RDF uses URIs]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives12Pierre Masure | Web technology: DBPedia ProjectRDF uses URIs to identify:individuals, e.g., Eric Miller, identified by http://www.w3.org/People/EM/contact#me

13. kinds of things, e.g., Person, identified by http://www.w3.org/2000/10/swap/pim/contact#Person

14. properties of those things, e.g., mailbox, identified by http://www.w3.org/2000/10/swap/pim/contact#mailbox

15. values of those properties, e.g. mailto:em@w3.org[RDF: XML]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives13Pierre Masure | Web technology: DBPedia Project<?xml version="1.0"?> <rdf:RDFxmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:contact="http://www.w3.org/2000/10/swap/pim/contact#"> <contact:Personrdf:about="http://www.w3.org/People/EM/contact#me"> <contact:fullName>Eric Miller</contact:fullName><contact:mailboxrdf:resource="mailto:em@w3.org"/> <contact:personalTitle>Dr.</contact:personalTitle> </contact:Person> </rdf:RDF>

16. [Extraction Motor PHP5]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives14DBPedia Information Extraction Framework:Laurent KALAMBAYI | Web technology: DBPedia Project

17. [Extraction MotorPHP5]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectivesThe frameworkis availablefrom the GNU GPL License.15Laurent KALAMBAYI | Web technology: DBPedia Project

18. [Extraction Motor PHP5]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectivesExample: Interface Extractorinterface Extractor{ /** @return uri */ public functiongetExtractorID(); public functionstart($language); /** @return ExtractionResult */ public functionextractPage($pageID, $pageTitle, $pageSource); /** @return ExtractionResult */ public function finish();}16Laurent KALAMBAYI | Web technology: DBPedia Project

19. [SPARQL requests]to access to the databaseDBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives17SPARQLProtocol AndRDFQueryLanguageSPARQL allows for a query to consist of triple patterns, conjunctions, disjunctions, and optional patterns…Laurent KALAMBAYI | Web technology: DBPedia Project

20. [SPARQL requests]to access to the databaseDBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectivesExample of SPARQL queryReturns all country capitals in Africa18Laurent KALAMBAYI | Web technology: DBPedia Project

21. [Demo](1)19URI Reference: http://dbpedia.org/page/NameURL Source fromWikipedia:http://en.wikipedia.org/wiki/NameLaurent KALAMBAYI | Web technology: DBPedia ProjectDBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives

22. [Demo](2)Filtering:http://dbpedia.neofonie.de/browse/20Laurent KALAMBAYI | Web technology: DBPedia ProjectDBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives

23. [Opinion]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives21Laurent KALAMBAYI | Web technology: DBPedia Project

24. [Opinion]DBPedia ProjectINTRODUCTIONObjectiveContext and MotivationToolWho develops it?Who uses it?How big is it?WORKINGBasicsWorkingTECHNICAL FLAVOURSRDF: databasePHP5: information extractionSPARQL: access to databaseDEMOExampleCONCLUSIONOpinionPerspectives22Laurent KALAMBAYI | Web technology: DBPedia Project