资料：TheincreasingamountofpersonalinformationthatcanbecollectedbycomputerprogramsthattrackhowpeopleuseFacebookhasbeenrevealedbyanextensiveacademicstudy. SuchprogramscanshowundisclosedprivateinformationsuchasFacebookusers'sexuality,drug-usehabitsandevenwhethertheirparentsseparatedwhentheywereyoung,accordingtothestudybytheUniversityofCambridgeacademics. Inoneofthebiggeststudiesofitskindscientistsfromtheuniversity’steamandaMicrosoft-fundedresearchcenteranalyzeddatafrom58,000Facebookuserstopredicttraitsandotherinformationthatwerenotprovidedintheirprofiles. Thealgorithmswere88percentaccurateinpredictingmalesexualorientation,95percentforraceand80percentforreligion.Andpoliticalleanings,personality typesandemotionalstabilitywerealsopredictedwithaccuracyrangingfrom62-75percent. Thestudyhighlightsgrowingconcernsaboutsocialnetworksandhowdatatrailscanbeminedforsensitiveinformationevenwhenpeopleattempttokeepinformationaboutthemselvesprivate：Lessthan5percentofuserswereconnectedwithexplicitlygaygroups. MichalKosinksi，oneofthereport’sauthorstoldtheFinancialTimesthattheuniversity’stechniquescouldeasilybereplicatedbycompaniestointerpersonalattributesapersondidnotwishtosharesuchassexualorientationorpoliticalviews:”Weusedverysimpleandgenericmethods:Marketingcompaniesandinternetcompaniescouldspendmuchmoretimeandresourcesandhencegetmuchhigheraccuracythanwedid. Thereportalsorevealedsomeunexpectedcorrelationssuchaspeoplewholiked‘curlyfries’havinghigherIQswhilethoseWholikeFacebook’s“SlidingonFloorsWithYourSocksOn”pagewereunlikelytousedrugs. Theword“algorithm”inthefourthpassagerefersto____.
A.the results of a study B.information from the Facebook C.the number of Facebook users D.personality types and emotional stability正确答案A
