A Robust Approach to Aligning Heterogeneous Lexical Resources

1. A RobustApproach to AligningHeterogeneousLexicalResources Mohammad TaherPilehvar Roberto Navigli MultiJEDI ERC 259234

2. Lexical Resource WordNet BabelNet UBY

3. Lexical Resource WordNet BabelNet UBY

4. Lexical Resource WordNet BabelNet UBY

5. Why combine resources? • Improvedword and conceptcoverage • e.g., namedentities, new senses • Improveddomaincoverage • Improvedmultilinguality • dozens of new languages • Expert-made relationspreserved • e.g., Hypernymy, meronymy, etc.

6. Why combine resources? Providescomplementaryknowledge Applications: SemanticParsing Shi and Mihalcea, 2005 SemanticRoleLabeling Palmer et al., 2010 WSD and entitylinking Moro et al., TACL 2014

7. Difficulty of resourcealignment Fine granularity of lexicalresources plant WordNet 4 senses 15 senses

8. How resourcealignmentworks? • Usuallymeasuresthe similarity of twoconcepts WordNet plant#n#1 plant#n#1 WKT: WN:

9. How resourcealignmentworks? • Usuallymeasuresthe similarity of twoconcepts • And alignstwoconceptsiftheirsimilarityexceedsa certainthreshold WordNet ? plant#n#1 plant#n#1 WKT: WN:

10. How resourcealignmentworks? Alignmentapproachesdifferin the way theycalculatethissimilarity WordNet ? plant#n#1 plant#n#1 WKT: WN:

11. Denfinitionalsimilarity Glosssimilarity WordNet

12. Denfinitionalsimilarity • Strong baseline • Fall short when • Differentwordings are used for sameconcepts • Whentwowordslackqualityglosses plant -- Buildings for carrying on industrial labor. plant -- The necessary infrastructure used in support and maintenance of a given facility.

13. Contributions A novel concept similarity measure Denfinitionalsimilarity An effective ontologization approach A robusttechnique for alignment of heterogeneousresources A robusttechnique for alignment of resources

14. Ourapproach: SemAlign

15. Ourapproach: SemAlign Definition similarity

16. Ourapproach: SemAlign Structuralsimilarity

17. SemAlign: structuralsimilarity WordNet

18. SemAlign: core Modelingconceptsthrough SemanticSignatures

19. Semantic Signature of a concept PersonalizedPageRank concept some concept

20. Semantic Signature of a concept PersonalizedPageRank concept Distributional representation over allconcepts in the semantic network

21. SemAlign Definition similarity WordNet

22. SemAlign WordNet

23. SemAlign: signatureunification

24. SemAlign: signatureunification Findconceptsassociated with monosemouswords WordNet

25. SemAlign: signatureunification Truncatevectors to the overlappingconcepts WordNet

26. SemAlign: signatureunification The reliability of leveragingmonosemouswords ~ 60% (72,000) WordNetSynsetscontaining atleastonemonosemous word

27. Semantic Signature Comparison

28. Weighted Overlap(Pilehvar et al., ACL 2013) Semantic Signature Comparison

29. SemAlign: score combination

30. Ontologizationof lexicalresources

31. Ontologizationof lexicalresources WordNet

32. Ontologizationof lexicalresources WordNet

33. Ontologizationof lexicalresources

34. Ontologizationof lexicalresources

35. Ontologizationof lexicalresources WordNet

36. Ontologizationof lexicalresources WordNet

37. Ontologizationof lexicalresources

38. Ontologizationof lexicalresources Definition page for sail

39. Ontologizationof lexicalresources WordNet

40. Ontologizationof lexicalresources WordNet

41. Ontologizationof lexicalresources

42. Ontologizationof lexicalresources WordNet

43. Ontologizationof lexicalresources Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails.

44. Ontologizationof lexicalresources Definition page for windmill A machine which translateslinear motion of wind to rotational motion by means of adjustable vanes called sails. linear motion.n.1 wind.n.1 windmill.n.1 rotational motion.n.1 translate.v.3 machine.n.1 adjustable vanes.v.4 sail.n.3

45. Ontologization:similarity-baseddisambiguation Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails.

46. Ontologization:similarity-baseddisambiguation Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails. Definition page for sail A trip in a boat, especially a sailboat. A sailing vessel; a vessel of any kind; a craft. The blade of a windmill. A tower-like structure found on the dorsal (topside) surface of submarines.

47. Ontologization:similarity-baseddisambiguation Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails. Definition page for sail A trip in a boat, especially a sailboat. A sailing vessel; a vessel of any kind; a craft. The blade of a windmill. A tower-like structure found on the dorsal (topside) surface of submarines.

48. Ontologization:similarity-baseddisambiguation Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails. Definition page for sail A trip in a boat, especially a sailboat. A sailing vessel; a vessel of any kind; a craft. The blade of a windmill. A tower-like structure found on the dorsal (topside) surface of submarines.

49. Ontologization:similarity-baseddisambiguation Definition page for windmill A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails. Definition page for sail A trip in a boat, especially a sailboat. A sailing vessel; a vessel of any kind; a craft. The blade of a windmill. A tower-like structure found on the dorsal (topside) surface of submarines.

50. Ontologization:evaluation (Meyer & Gurevych, 2012)