欢迎来到天天文库
浏览记录
ID:34070080
大小:1.39 MB
页数:58页
时间:2019-03-03
《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........
此文档下载收益归作者所有