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1、SentimentAnalysisWhat%is%Sen+ment%Analysis?%Dan%Jurafsky%Posi%ve(or(nega%ve(movie(review?(•unbelievably%disappoin+ng%%•Full%of%zany%characters%and%richly%applied%sa+re,%and%some%great%plot%twists%•%this%is%the%greatest%screwball%comedy%ever%filmed%•%It%was%pathe+c.%Th
2、e%worst%part%about%it%was%the%boxing%scenes.%2%Dan%Jurafsky%Google(Product(Search(•a%3%Dan%Jurafsky%Bing(Shopping(•a%4%Dan%Jurafsky%Twi;er(sen%ment(versus(Gallup(Poll(of(Consumer(Confidence(BrendanO'Connor,RamnathBalasubramanyan,BryanR.Routledge,andNoahA.Smith.2010.Fr
3、om%Tweets%to%Polls:%Linking%Text%Sen+ment%to%Public%Opinion%Time%Series.%In%ICWSMP2010%Dan%Jurafsky%Twi;er(sen%ment:(Johan%Bollen,%Huina%Mao,%Xiaojun%Zeng.%2011.%TwiXer%mood%predicts%the%stock%market,%Journal%of%Computa+onal%Science%2:1,%1P8.%10.1016/j.jocs.2010.12.0
4、07.%%%%6%Dan%Jurafsky%Bollen%et%al.%(2011)%•CALM%predicts%DJIA%3%days%later%•At%least%one%current%hedge%Dow%Jones%fund%uses%this%algorithm%CALM%7%Dan%Jurafsky%Target(Sen%ment(on(Twi;er(•TwiXer%Sen+ment%App%•Alec%Go,%Richa%Bhayani,%Lei%Huang.%2009.%TwiXer%Sen+ment%Cla
5、ssifica+on%using%Distant%Supervision%8%Dan%Jurafsky%Sen%ment(analysis(has(many(other(names(•Opinion%extrac+on%•Opinion%mining%•Sen+ment%mining%•Subjec+vity%analysis%9%Dan%Jurafsky%Why(sen%ment(analysis?(•Movie:%%is%this%review%posi+ve%or%nega+ve?%•Products:%what%do%pe
6、ople%think%about%the%new%iPhone?%•Public/sen1ment:%how%is%consumer%confidence?%Is%despair%increasing?%•Poli1cs:%what%do%people%think%about%this%candidate%or%issue?%•Predic1on:%predict%elec+on%outcomes%or%market%trends%from%sen+ment%10%Dan%Jurafsky%Scherer(Typology(of(
7、Affec%ve(States(•Emo%on:%brief%organically%synchronized%…%evalua+on%of%a%major%event%%•angry,/sad,/joyful,/fearful,/ashamed,/proud,/elated%•Mood:%diffuse%nonPcaused%lowPintensity%longPdura+on%change%in%subjec+ve%feeling%•cheerful,/gloomy,/irritable,/listless,/depressed
8、,/buoyant%•Interpersonal(stances:%affec+ve%stance%toward%another%person%in%a%specific%interac+on%•friendly,/flirta1ous,/distant,/cold,
