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1、DeepLearningforSentimentAnalysis:ASurveyLeiZhang,LinkedInCorporation,lzhang32@gmail.comShuaiWang,UniversityofIllinoisatChicago,shuaiwanghk@gmail.comBingLiu,UniversityofIllinoisatChicago,liub@uic.eduAbstractDeeplearninghasemergedasapowerfulmachinelearningtechniquetha
2、tlearnsmultiplelayersofrepresentationsorfeaturesofthedataandproducesstate-of-the-artpredictionresults.Alongwiththesuccessofdeeplearninginmanyotherapplicationdomains,deeplearningisalsopopularlyusedinsentimentanalysisinrecentyears.Thispaperfirstgivesanoverviewofdeeple
3、arningandthenprovidesacomprehensivesurveyofitscurrentapplicationsinsentimentanalysis.INTRODUCTIONSentimentanalysisoropinionminingisthecomputationalstudyofpeople’sopinions,sentiments,emotions,appraisals,andattitudestowardsentitiessuchasproducts,services,organizations
4、,1individuals,issues,events,topics,andtheirattributes.TheinceptionandrapidgrowthofthefieldcoincidewiththoseofthesocialmediaontheWeb,forexample,reviews,forumdiscussions,blogs,micro-blogs,Twitter,andsocialnetworks,becauseforthefirsttimeinhumanhistory,wehaveahugevolume
5、ofopinionateddatarecordedindigitalforms.Sinceearly2000,sentimentanalysishasgrowntobeoneofthemostactiveresearchareasinnaturallanguageprocessing(NLP).Itisalsowidelystudiedindatamining,Webmining,textmining,andinformationretrieval.Infact,ithasspreadfromcomputerscienceto
6、managementsciencesandsocialsciencessuchasmarketing,finance,politicalscience,communications,healthscience,andevenhistory,duetoitsimportancetobusinessandsocietyasawhole.Thisproliferationisduetothefactthatopinionsarecentraltoalmostallhumanactivitiesandarekeyinfluencers
7、ofourbehaviours.Ourbeliefsandperceptionsofreality,andthechoiceswemake,are,toaconsiderabledegree,conditioneduponhowothersseeandevaluatetheworld.Forthisreason,wheneverweneedtomakeadecisionweoftenseekouttheopinionsofothers.Thisisnotonlytrueforindividualsbutalsotrueforo
8、rganizations.Nowadays,ifonewantstobuyaconsumerproduct,oneisnolongerlimitedtoaskingone’sfriendsandfamilyforopinionsbecausetherearemanyuserr
