9 relation extraction

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1、RelationExtractionWhat%is%rela+on%extrac+on?%Dan%Jurafsky%Extrac'ng*rela'ons*from*text*•Company%report:%“Interna+onal%Business%Machines%Corpora+on%(IBM%or%the%company)%was%incorporated%in%the%State%of%New%York%on%June%16,%1911,%as%the%Compu+ngKTabula+ngKRecording%Co.%(CKTKR)…”%•Extracted%Complex

2、%Rela+on:%CompanyKFounding%%%Company%%IBM%%%Loca+on%%%New%York%%%Date%%%June%16,%1911%%%OriginalKName%%%Compu+ngKTabula+ngKRecording%Co.%•But%we%will%focus%on%the%simpler%task%of%extrac+ng%rela+on%triples*FoundingKyear(IBM,1911)%FoundingKloca+on(IBM,New%York)%Dan%Jurafsky%Extrac'ng*Rela'on*Tripl

3、es*from*Text*%The%Leland%Stanford%Junior%University,%commonly%referred%to%as%Stanford%University%or%Stanford,%is%an%American%private%research%university%located%in%Stanford,%California%…%near%Palo%Alto,%California…%Leland%Stanford…founded%the%university%in%1891%StanfordEQLelandStanfordJuniorUniv

4、ersityStanfordLOC-INCaliforniaStanfordIS-AresearchuniversityStanfordLOC-NEARPaloAltoStanfordFOUNDED-IN1891StanfordFOUNDERLelandStanfordDan%Jurafsky%Why*Rela'on*Extrac'on?*•Create%new%structured%knowledge%bases,%useful%for%any%app%•Augment%current%knowledge%bases%•Adding%words%to%WordNet%thesauru

5、s,%facts%to%FreeBase%or%DBPedia%•Support%ques+on%answering%•The%granddaughter%of%which%actor%starred%in%the%movie%“E.T.”?%(acted-in?x“E.T.”)(is-a?yactor)(granddaughter-of?x?y)!•But%which%rela+ons%should%we%extract?%!4%Dan%Jurafsky%Automated*Content*Extrac'on*(ACE)*17relationsfrom2008“RelationExt

6、ractionTask”PERSON-GENERALPART-PHYSICALSOCIALAFFILIATIONWHOLESubsidiaryFamilyLastingNearCitizen-PersonalResident-GeographicalLocatedEthnicity-Org-Location-BusinessReligionOriginORGAFFILIATIONARTIFACTInvestorFounderStudent-AlumOwnershipUser-Owner-Inventor-EmploymentManufacturerMembershipSports-Af

7、filiationDan%Jurafsky%Automated*Content*Extrac'on*(ACE)*•PhysicalKLocated%%%%%%%%%%%%PERKGPE%!HewasinTennessee!•PartKWholeKSubsidiary%%ORGKORG%%%%XYZ,theparentcompanyofABC!•PersonKSocialKFamily%%%%%PERKPER%John’swifeYoko!•Or