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1、哈爾濱工業(yè)大學(xué)管理學(xué)碩士學(xué)位論文AbstractInrecentyears，thenetworkhasbecomethemainplatformforthepubictoexpresspersonalfeelingsandpoliticalattitudes，theformationanddisseminationofmassunexpectedincidentsnetworkpublicopinionhasalsohadamajorimpactonnetizenandsociety.Asthenetworkenrichedinthepresence,especiallyth
2、erapidgrowthofMicro-blog,thebreedandspreadchannelsofmassunexpectedincidentshaveshifted,Micro-bloghasalreadybecomethemaincarrierofnetworkpublicopinion，andthenewlyformedMicro-blogpublicopinionpresenteddifferentcharacteristicsinevolutionprocessandevolutionmanner.Thispapercompletedawholeanalysi
3、sontheevolutionprocessofthemassunexpectedincidentsMicro-blogpublicopinion,includingthestaticevolutionparameterstudies,andthedynamicevolutionaspectsanalysis.First,therawresearchdatawascollectedfromSinaWeiboplatform,andtheamountofmicro-blogs,aswellasthefrequencyofreposts,wereusedasdominantind
4、icatorstoreflecttheoverallheatconditionofMicro-blogpublicopinion;micro-blogtextswereclusteredintodifferentthemesbytheintegrateduseofprobabilistictopicmodelandtextclusteringmethodbasedondistance;bycomparingtheclassificationperformanceofdifferentfeatureextractionalgorithmsandtextclassificatio
5、nmethodportfolios,atextclassificationmodelwasbuiltwithTF-IDF,IGandSVM,withwhichthesentimentpolarityclassificationofmicro-blogtextswascompletedprecisely.Then,thispaperanalyzedtheevolutionconditionofalltheaboveparameters,aswellastheirperformedcharacteristicsineachevolutionarystage.Finally,byt
6、akingthesurvivaltimeandrepostingtimesasmaindependentvariable,thispaperconstructedanopinionleadersidentifyingmodelwithCox’sproportionalhazardanalysisandNegativeBinomialregressionanalysis,andtheeffectsoftheidentifiedopinionleaderstoMicro-blogpublicopinionevolutionwerestudiedsubsequently.Keywo
7、rdsMicro-blogpublicopinionevolution;topicclustering;sentimentanalysis;opinionleadersidentifying-II-哈爾濱工業(yè)大學(xué)管理學(xué)碩士學(xué)位論文目錄摘要......................................................................................................................IAbstract........
