A Study of Smoothing Methods for Language Models.pdf

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1、AStudyofSmoothingMethodsforLanguageModelsAppliedtoAdHocInformationRetrievalChengxiangZhaiJohnLaffertySchoolofComputerScienceSchoolofComputerScienceCarnegieMellonUniversityCarnegieMellonUniversityPittsburgh,PA15213Pittsburgh,PA15213ABSTRACT %'-''9.( 

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