Reference Ontology Presentation

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this is our presntation for kare workshop in conjunction with SITIS IEEE conference held in Marrakech, Morocco, november 2009

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Reference Ontology Presentation

  1. 1. Referenceontology<br /> Leïla Zemmouchi-Ghomari, l_zemmouchi@esi.dz<br />Abdessamed Réda Ghomari, a_ghomari@esi.dz<br />LMCSLaboratory, <br />ESI (National Superior School of Computer Science)<br />Algiers, Algeria<br />KARE InternationalWorkshop<br />In conjunctionwithSITIS, IEEE International Conference<br />November 29th-December 04th 2009 held in Marrakech, Morocco<br />
  2. 2. 23/11/2009<br />KARE&apos;09<br />2<br />Introduction<br />Semantic web<br />Knowledgeshare<br />Need ofdomain ontologies<br />Many ontologies built<br />Most ofthemaretoospecific<br />domain Reference ontologies<br />
  3. 3. 23/11/2009<br />KARE&apos;09<br />3<br />Contents<br />Whatis a Referenceontology?<br />Whatisexpectedfromthisontology?<br />How to buildit?<br />What are the mostfamousReference ontologies?<br />
  4. 4. 23/11/2009<br />KARE&apos;09<br />4<br />Whatis a Referenceontology?<br />Nicolas Guarinouses the term : « Referenceontology » for the first timeduring the 26th GermanConference on Artificial Intelligence (September 15th-18th 2003 held in Hamburg) <br />SinceThen, there have been ManyReferenceontologydefinitionsproposedwhichhighlitedits main features, such as:<br />To Describe a certain domainadequately<br /><br /> Tobetrue about a certain portion of reality<br /><br /> To beindependentfromspecific objectives <br /><br />To bevalidated by a large community of domain experts<br /><br />
  5. 5. 23/11/2009<br />KARE&apos;09<br />5<br />Whatis a Referenceontology?<br />« Domain Reference ontologies representknowledge about a particular part of the world in a waythatisindependentfromspecific objectives, through a theory of a domain» <br />Anita Burgun, Desiderata for domainreference ontologies in biomedicine, Journal of Biomedical information, 39(2006) 307-313.<br />
  6. 6. 23/11/2009<br />KARE&apos;09<br />6<br />Whatis a Referenceontology?<br />Purpose<br />Application<br />Expressiveness<br />FoundationalOntology<br />Vs. Reference<br />Ontology<br />Reference<br />Lightweight<br />Heavyweight<br />Specificity<br />Core<br />Domain<br />Generic<br />
  7. 7. 23/11/2009<br />KARE&apos;09<br />7<br />Whatis a Referenceontology?<br />Reference ontology<br />Foundational ontology<br /><ul><li>Declare a theory about a particulardomain of reality
  8. 8. Make use of methods of top-level ontologies
  9. 9. Generalize to otherdomains (more specificdomains)
  10. 10. Domain-independenttheories
  11. 11. High degree of representationalaccuracy
  12. 12. Designed to be used as</li></ul>controls on other ontologies types <br />
  13. 13. 23/11/2009<br />KARE&apos;09<br />8<br />Whatis a Referenceontology?<br />WhenReferenceontologyisgeneric, the twoontology types are equivalent.<br />Otherwise, theybelong to different abstraction levels:<br />Conclusion<br />RequiressolidPhilosophical Background<br />
  14. 14. 23/11/2009<br />KARE&apos;09<br />9<br />Whatis a Referenceontology?<br />Purpose<br />Reference Vs. Application <br />ontologyontology<br />Application<br />Expressiveness<br />Reference<br />Lightweight<br />Heavyweight<br />Specificity<br />Core<br />Domain<br />Generic<br />
  15. 15. 23/11/2009<br />KARE&apos;09<br />10<br />Whatis a Referenceontology?<br />Application ontology<br />Reference ontology<br /><ul><li>Narrow and Shallow:
  16. 16. Provides a minimal terminological structure
  17. 17. Fits the needs of a specific</li></ul>community<br /><ul><li>Offersterminological services for semanticaccess, checkingconstraintsbetweenterms
  18. 18. Lightweight ontologies, designedaccording to the viewpoint of an end-user in a particulardomain
  19. 19. Can bederivedfromReferenceontology
  20. 20. Broad and Deep:
  21. 21. maximal coverage
  22. 22. Fits the needs of a large </li></ul>community<br /><ul><li>Establishes consensus about meaning of terms
  23. 23. Rich, axiomatictheories, designedaccording to strict ontologicalprinciples
  24. 24. Can bederivedfromFoundationalontology</li></li></ul><li>23/11/2009<br />KARE&apos;09<br />11<br />Whatis a Referenceontology?<br />« Reference ontologies and application ontologies reflectdifferent aspects of a single methodology of ontologydevelopment »:<br />Experts communityview point  vs.  End-user view point<br />Conclusion<br />
  25. 25. 23/11/2009<br />KARE&apos;09<br />12<br />Whatis a Referenceontology?<br />Purpose<br />Application<br />Reference Vs. Core<br />ontologyontology<br />Reference<br />Specificity<br />Core<br />Domain<br />Generic<br />
  26. 26. 23/11/2009<br />KARE&apos;09<br />13<br />Whatis a Referenceontology?<br />Core ontology<br />Reference ontology<br /><ul><li>Catches the central concepts and relations of a domain
  27. 27. Defines concepts which are generic across a set of domains,
  28. 28. Focuses on a domain application withoutbeingrestricted to specific applications
  29. 29. Built in agreement withfoundational ontologies or based on wellfoundedmethodologies
  30. 30. Declare a theory about a particulardomain of reality
  31. 31. Generalize to otherdomains
  32. 32. Representsknowledge about a particular part of the world in a waythatisindependentfromspecific objectives
  33. 33. Rich, axiomatictheories, designedaccording to strict ontologicalprinciples, canbederivedfromFoundationalontology</li></li></ul><li>23/11/2009<br />KARE&apos;09<br />14<br />Whatis a Referenceontology?<br />Referenceontologyis a Coreontology<br />Conclusion<br />Purpose<br />Application<br />ReferenceOntology<br />Reference<br />Heavyweight<br />Specificity<br />Core<br />Domain<br />Generic<br />
  34. 34. 23/11/2009<br />KARE&apos;09<br />15<br />2. WhatisexpectedfromReferenceontology?<br />Referenceontologycouldcontributesignificantly to severalresearch areas, like:<br /> a. OntologyMatching:<br />Referenceontologyprovidesthe contextin whichitiseasier to match ontologies (by managingdifferencesthat arise betweenthese ontologies)<br />
  35. 35. 23/11/2009<br />KARE&apos;09<br />16<br />WhatisexpectedfromReferenceontology?<br />a. OntologyMatching :<br />In a concreteway, Referenceontologyreducessignificantly the number of mappingsbetween ontologies to bematched:<br /><br />PairwiseAlignment<br />n(n-1)/2 mappings<br />Alignmentthrough a Reference<br /> (n-1) mappings<br />
  36. 36. 23/11/2009<br />KARE&apos;09<br />17<br />WhatisexpectedfromReferenceontology?<br />b. Ontology Evaluation:<br />If we have to compare several ontologies to eachother, the Referenceontologycouldplay the role of a framwork to facilitatethisevaluation, for example: <br />In the Information Retrievalfield, itisfrequent to compare between ontologies for deducingwhichontologyisthe more relevant for the IR task, the Referenceontologyrepresentshere the corpus in which the taskwillbeachieved. <br />
  37. 37. 23/11/2009<br />KARE&apos;09<br />18<br />WhatisexpectedfromReferenceontology?<br />c. Semantic web :<br />Referenceontologycouldprovide a commonconceptualfoundation for variousresources on the semantic web. <br />Referenceontology has the potential to linkheterogeneous application ontologies together in the semantic web.<br />
  38. 38. 23/11/2009<br />KARE&apos;09<br />19<br />Semantic web<br />Knowledgeshare<br />Need ofdomain ontologies<br />Many ontologies built<br />Most ofthemaretoospecific<br />The link betweenthesespecificresources will beassuredby<br />the Reference ontology<br />
  39. 39. 23/11/2009<br />KARE&apos;09<br />20<br />3. How to build a Referenceontology?<br />On the basis of Domain ontologies<br />By Extensions or Specialization of Foundational ontologies<br />Reference<br />Coreontology<br />Core<br />Generic<br />
  40. 40. 23/11/2009<br />KARE&apos;09<br />21<br />3. How to build a Referenceontology?<br />O2<br />O1<br />On the basis of Domain ontologies<br />By Extensions or Specialization of Foundational ontologies<br />o3<br />Inputs:<br />Describe<br />the same Domain<br />DOLCE<br />CYC<br />SUMO<br />BFO<br />OCHRE<br />ReferenceOntology<br />ReferenceOntology<br />Analysis and Synthesis<br />Reuse<br />Output<br />
  41. 41. 23/11/2009<br />KARE&apos;09<br />22<br />3. How to build a Referenceontology?<br />Foundationalontology<br />Foundation<br />and Semantics<br />Philosophical background<br />Domain independent<br />Referenceontology<br />Extensions,<br />Specializations, Instanciations<br />Matching, Merging<br />Domain ontology<br />Passage Rulesbetweenontologylevels<br />
  42. 42. 23/11/2009<br />KARE&apos;09<br />23<br />4. What are the mostfamous<br />Reference ontologies?<br />Most of existent References ontologies belong to Biomedicaldomain.<br />The OBO (Open Biomedical Ontologies) Foundryisvery active in development of biomedicalReference ontologies.<br />
  43. 43. 23/11/2009<br />KARE&apos;09<br />24<br />ChemicalEntities of biologicalinterest<br />CellOntology<br />SequenceOntology<br />Foundational Model of Anatomy <br />Relation ontology <br />Protein ontology <br />Functional Genomics investigation ontology <br />RNA ontology <br />Gene Ontology<br />4. What are the mostfamous<br />Reference ontologies?<br />
  44. 44. 23/11/2009<br />KARE&apos;09<br />25<br />4. What are the mostfamous<br />Reference ontologies?<br />
  45. 45. 23/11/2009<br />KARE&apos;09<br />26<br />Conclusion<br />Aspects needed to bedeepened: <br /><ul><li>Methodology for buildingReference ontologies (by the reuse of eitherFoundational and/or Domain ontologies)
  46. 46. Formalways to derive application ontologies from the Referenceontology (suchassemantic web query languages)</li></ul>Purposes: ClarifyReference ontology paradigm<br />Highlight Reference ontology benefits<br />
  47. 47. 23/11/2009<br />KARE&apos;09<br />27<br />Thank you for your attention!<br />Any Questions?<br />

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