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1、ThispageintentionallyleftblankGRAPH-BASEDNATURALLANGUAGEPROCESSINGANDINFORMATIONRETRIEVALGraphtheoryandthefieldsofnaturallanguageprocessingandinformationretrievalarewell-studieddisciplines.Traditionally,theseareashavebeenper-ceivedasdistinct,withdifferental
2、gorithms,differentapplications,anddifferentpotentialend-users.However,recentresearchhasshownthatthesedisciplinesareintimatelyconnected,withmuchvarietyinthewaythatnaturallanguageprocessingandinformationretrievalapplicationsfindefficientsolutionswithingraph-th
3、eoreticalframeworks.Thisbookisacomprehensivedescriptionoftheuseofgraph-basedalgo-rithmsfornaturallanguageprocessingandinformationretrieval.Itbringstogethertopicsasdiverseaslexicalsemantics,textsummarization,textmin-ing,ontologyconstruction,textclassificatio
4、n,andtextretrieval,whichareconnectedbythecommonunderlyingthemeoftheuseofgraph-theoreticalmethodsfortext-andinformation-processingtasks.Readerswillgainafirmunderstandingofthemajormethodsandapplicationsinnaturallanguagepro-cessingandinformationretrievalthatre
5、lyongraph-basedrepresentationsandalgorithms.RadaMihalceaisanAssociateProfessorintheDepartmentofComputerSci-enceandEngineeringattheUniversityofNorthTexas,wheresheleadstheLanguageandInformationTechnologiesresearchgroup.In2009,shereceivedthePresidentialEarlyC
6、areerAwardforScientistsandEngineers,awardedbyPresidentBarackObama.Sheservedontheeditorialboardofseveraljournals,includingComputationalLinguistics,JournalofNaturalLanguageEngineer-ing,andLanguageResourcesandEvaluations,andshecochairedtheEmpiricalMethodsinNa
7、turalLanguageProcessingConferencein2009andtheAssocia-tionforComputationalLinguisticsConferencein2011.ShehasbeenpublishedinIEEEIntelligentSystems,JournalofNaturalLanguageEngineering,Jour-nalofMachineTranslation,ComputationalIntelligence,InternationalJournal
8、ofSemanticComputing,andArtificialIntelligenceMagazine.DragomirRadevisaProfessorintheSchoolofInformation,theDepart-mentofElectricalEngineeringandComputerScience,andtheDepartmentofLinguisticsattheUniversityofMic