群体性突发事件微博舆情演化-分析

《群体性突发事件微博舆情演化-分析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、哈尔滨工业大学管理学硕士学位论文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-哈尔滨工业大学管理学硕士学位论文目录摘要......................................................................................................................IAbstract........