基于微博的情感-分析关键技术-研究

《基于微博的情感-分析关键技术-研究》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、万方数据II万方数据AbstractResearchonSentimentAnalysisandOpinionMiningofWeiboCandidate：JuYu，Supervisor：Prof．QiaoWANGSchoolofInformationScienceandEngineering,SoutheastUniversity,ChinaAftersteppingintotheeraofmobileinternet，peoplearebecomingmorewillingtosharetheiropinionsandlifeexperienceswithothersthroughint

2、ernet．Meanwhile，itresultsinanexplosiveaccumulationofsubjectiveinformationonsocialnetworkslikeWeibo．Andinthiscontext，thesentimentanalysisofWeibokeepsbothgreatsocialandcommercialvalues；asforgovernors，itCanfacilitatetheirunderstandingtowardspublicopinions；whileformerchants，ithelpsthemtofollowupconsume

3、rs’attitudes．HereIaimtodevelopasetofmethodsforsentimentanalysisandopinionminingofWeibo．Myworkmainlycomprisesfourparts，i．e．unknownwordsrecognition，Weibocorpuspre-processing，sentimentlexiconsextensionandalgorithmsforsentimentanalysis．Throughthework，wehavesignificantlyimprovedtherecognitionrateofthewo

4、rdsegmentationsystem．Andasentim、entlexiconforWeibowasbuiltbyus．WehavealsoconstructedintelligentminingmethodforthesentimentpolarityanalysisofWeibo．Finally,weachievedtobuildupaproto—systemforthesentimentanalysisandopinionminingofhottopicsonWeibo．Andthroughitwecangetthesentimentpolarityoftopics，aswell

5、asacquiretherealopinionsofWeibousers．Inthispaper,wefirstgiveabriefintroductiontothecurrentstudyofsentimentanalysisandopinionmining，anditssocialandcommercialvalue．AfterthedissectionofthelinguisticcharacteristicofcontentonWeibo，weevaluatedtheeffectivenessofdatapre—processingmethodsandalgorithmsforsen

6、timentanalysisofWeibo．Ondatapre—processing，weprovideanalgorithmforunknownwordsrecognitionwhichbasedonco-occurrencefrequency,anditcaneffectivelyrecognizeunknownwordsfromWeiboandimprovetheperformanceofwordsegmentationsystem．Thesentimentlexiconsexpansionisstartedbypre—processingofWeibocorpusbasedonthe

7、wordsegmentationsystem．Andthenistheclarificationofroughdatatomakeitwellstructured．Eventuallyweexpandtheprimarysentiment1exiconsbasedonwell．processeddata．Andinthisprocess，wehavecomparedtheadvantagesanddisadv