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1、Non-ClassicalLexicalSemanticRelationsJaneMorrisGraemeHirstFacultyofInformationStudiesDepartmentofComputerScienceUniversityofTorontoUniversityofTorontoToronto,Ontario,CanadaM5S3G6Toronto,Ontario,CanadaM5S3G4morris@fis.utoronto.cagh@cs.toronto.eduyers,governmentworkers,friends,allspeak
2、ingofAbstractthedeceased’skindness,hisbrillianceinmathe-matics,hisloveofSCRABBLEandCHESS,hisNLPmethodsandapplicationsneedtotakegreathumilityandcompassion,hissenseofhumor.accountnotonlyof“classical”lexicalrela-tions,asfoundinWordNet,buttheless-Therearefourgroupsofrelatedwordsinthistex
3、t:thestructural,morecontext-dependent“non-italicizedgroupisaboutfunerals,theboldedgroupisclassical”relationsthatreadersintuitintext.positivehumancharacteristics,theunderlinedgroupisInareader-basedstudyoflexicalrelationsinjobtypes,andthecapitalizedgroupisgames.Someoftext,mostwerefound
4、tobeofthelattertype.thelexicalrelationshereareoftheclassicalkindthatweTherelationshipsthemselvesareanalyzed,mentionedearlier(e.g.,chessandScrabblehaveaandconsequencesforNLParediscussed.commonsubsumer);butothersareexamplesofrela-tionsthatwewillrefertoas“non-classical”,suchasfuneral/ch
5、apelandhumility/kindness.Thegoalofthisresearchistoinvestigatethesenon-classicalrela-1Introductiontions,andtodeterminewhatthedifferenttypesareandhowtheyareused,withaviewtoeventualautomaticManyNLPapplications,suchastextsummarizationanddetectionoftherelationshipsintext.discoursesegmenta
6、tion,require,orcanbehelpedby,Mostpriorresearchontypesoflexicalsemanticre-theidentificationoflexicalsemanticrelationsintext.lationshasbeencontext-free:therelationsareconsid-However,theresourcesthatarepresentlyavailable,eredoutofanytextualcontextandarethenassumedtosuchasWordNet(Fellbau
7、m,1998)provideonly“clas-berelevantwithintextualcontexts.Andinlexicalco-sical”relations:taxonomyorhyponymy(robin/bird),hesionresearch,theanalysisoflexicalrelationshashypernymy(tool/hammer),troponymy(drink/guzzle),beendonebyprofessionallinguistswithparticularmeronymy(hand/finger),anton
8、ymy(go/come)
