PDF《Sentiment》

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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.2010.12.007.% % %% 6% Dan%Jurafsky% 7% Dow%Jones% ?? CALM%predicts% DJIA%3%days% later% ?? At%least%one% current%hedge% fund%uses%this% algorithm% CALM% Bollen%et%al.%(2011)% Dan%Jurafsky% Target(Sen%ment(on(Twi;

er( ?? TwiXer%Sen+ment%App% ?? Alec%Go,%Richa%Bhayani,%Lei%Huang.%2009.% TwiXer%Sen+ment%Classi?ca+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%people%think%about%the%new%iPhone?% ?? Public/sen1ment:%how%is%consumer%con?dence?%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(A?ec%ve(States( ?? Emo%on:%brief%organically%synchronized%…%evalua+on%of%a%major%event%% ?? angry,/sad,/joyful,/fearful,/ashamed,/proud,/elated% ?? Mood:%di?use%nonPcaused%lowPintensity%longPdura+on%change%in%subjec+ve%feeling% ?? cheerful,/gloomy,/irritable,/listless,/depressed,/buoyant% ?? Interpersonal(stances:%a?ec+ve%stance%toward%another%person%in%a%speci?c%interac+on% ?? friendly,/?irta1ous,/distant,/cold,/warm,/suppor1ve,/contemptuous/ ?? AGtudes:%enduring,%a?ec+vely%colored%beliefs,%disposi+ons%towards%objects%or%persons% ?? /liking,/loving,/ha1ng,/valuing,/desiring% ?? Personality(traits:%stable%personality%disposi+ons%and%typical%behavior%tendencies% ?? nervous,/anxious,/reckless,/morose,/hos1le,/jealous/ Dan%Jurafsky% Scherer(Typology(of(A?ec%ve(States( ?? Emo%on:%brief%organically%synchronized%…%evalua+on%of%a%major%event%% ?? angry,/sad,/joyful,/fearful,/ashamed,/proud,/elated% ?? Mood:%di?use%nonPcaused%lowPintensity%longPdura+on%change%in%subjec+ve%feeling% ?? cheerful,/gloomy,/irritable,/listless,/depressed,/buoyant% ?? Interpersonal(stances:%a?ec+ve%stance%toward%another%person%in%a%speci?c%interac+on% ?? friendly,/?irta1ous,/distant,/cold,/warm,/suppor1ve,/contemptuous/ ?? AGtudes:(enduring,(a?ec%vely(colored(beliefs,(disposi%ons(towards(objects(or(persons( ?? !liking,/loving,/ha1ng,/valuing,/desiring/ ?? Personality(traits:%stable%personality%disposi+ons%and%typical%behavior%tendencies% ?? nervous,/anxious,/reckless,/morose,/hos1le,/jealous/ Dan%Jurafsky% Sen%ment(Analysis( ?? Sen+ment%analysis%is%the%detec+on%of%aGtudes( enduring,%a?ec+vely%colored%beliefs,%disposi+ons%towards%objects%or%persons % 1.? Holder((source)(of%aftude% 2.? Target((aspect)(of%aftude% 3.? Type(of%aftude% ?? From%a%set%of%types% ?? Like,/love,/hate,/value,/desire,%etc.% ?? Or%(more%commonly)%simple%weighted%polarity:%% ?? posi1ve,/nega1ve,/neutral,/together%with%strength/ 4.? Text%containing%the%aftude% ?? Sentence%or%en+re%document% 13% Dan%Jurafsky% Sen%ment(Analysis( ?? Simplest%task:% ?? Is%the%aftude%of%this%text%posi+ve%or%nega+ve?% ?? More%complex:% ?? Rank%the%aftude%of%this%text%from%1%to%5% ?? Advanced:% ?? Detect%the%target,%source,%or%complex%aftude%types% Dan%Jurafsky% Sen%ment(Analysis( ?? Simplest%task:% ?? Is%the%aftude%of%this%text%posi+ve%or%nega+ve?% ?? More%complex:% ?? Rank%the%aftude%of%this%text%from%1%to%5% ?? Advanced:% ?? Detect%the%target,%source,%or%complex%aftude%types% Sentiment Analysis What%is%Sen+ment% Analysis?% Sentiment Analysis A%Baseline% Algorithm% Dan%Jurafsky% Sentiment Classification in Movie Reviews ?? Polarity%detec+on:% ?? Is%an%IMDB%movie%review%posi+ve%or%nega+ve?% ?? Data:%Polarity/Data/2.0:// ?? hXp://www.cs.cornell.edu/people/pabo/moviePreviewPdata% Bo%Pang,%Lillian%Lee,%and%Shivakumar%Vaithyanathan.%%2002.%%Thumbs%up?%Sen+ment% Classi?ca+on%using%Machine%Learning%Techniques.%EMNLPP2002,%79―86.% Bo%Pang%and%Lillian%Lee.%%2004.%%A%Sen+mental%Educa+on:%Sen+ment%Analysis%Using% Subjec+vity%Summariza+on%Based%on%Minimum%Cuts.%%ACL,%271P278% Dan%Jurafsky% IMDB(data(in(the(Pang(and(Lee(database( when%_star%wars_%came%out%some%twenty%years% ago%,%the%image%of%traveling%throughout%the%stars% has%become%a%commonplace%image%.%[…]% when%han%solo%goes%light%speed%,%the%stars%change% to%bright%lines%,%going%towards%the%viewer%in%lines% that%converge%at%an%invisible%point%.%% cool%.%% _october%sky_%o?ers%a%much%simpler%imageCthat%of% a%single%white%dot%,%traveling%horizontally%across%the% night%sky% %snake%eyes% %is%the%most%aggrava+ng% kind%of%movie%:%the%kind%that%shows%so% much%poten+al%then%becomes% unbelievably%disappoin+ng%.%% it'