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1、UserInteractionsinSocialNetworksandtheirImplicationsChristoWilson,BryceBoe,AlessandraSala,KrishnaP.N.Puttaswamy,andBenY.ZhaoComputerScienceDepartment,UniversityofCaliforniaatSantaBarbara{bowlin,bboe,alessandra,krishnap,ravenben}@cs.ucsb.eduAbstract1.IntroductionS
2、ocialnetworksarepopularplatformsforinteraction,com-Socialnetworksarepopularinfrastructuresforcommunica-municationandcollaborationbetweenfriends.Researcherstion,interaction,andinformationsharingontheInternet.haverecentlyproposedanemergingclassofapplicationsPopular
3、socialnetworkssuchasMySpaceandFacebookthatleveragerelationshipsfromsocialnetworkstoimproveprovidecommunication,storageandsocialapplicationsforsecurityandperformanceinapplicationssuchasemail,webhundredsofmillionsofusers.Usersjoin,establishsocialbrowsingandoverlayr
4、outing.Whiletheseapplicationsof-linkstofriends,andleveragetheirsociallinkstosharecon-tencitesocialnetworkconnectivitystatisticstosupporttheirtent,organizeevents,andsearchforspecificusersorshareddesigns,researchersinpsychologyandsociologyhavere-resources.Thesesocia
5、lnetworksprovideplatformsforor-peatedlycastdoubtonthepracticeofinferringmeaningfulganizingevents,usertousercommunication,andareamongrelationshipsfromsocialnetworkconnectionsalone.ThistheInternet'smostpopulardestinations.leadstothequestion:Aresociallinksvalidindic
6、atorsofrealRecentworkhasseentheemergenceofaclassofsocially-userinteraction?Ifnot,thenhowcanwequantifythesefac-enhancedapplicationsthatleveragerelationshipsfromso-torstoformamoreaccuratemodelforevaluatingsocially-cialnetworkstoimprovesecurityandperformanceofnet-en
7、hancedapplications?Inthispaper,weaddressthisques-workapplications,includingspamemailmitigation[Garrisstionthroughadetailedstudyofuserinteractionsinthe2006],Internetsearch[Mislove2006],anddefenseagainstFacebooksocialnetwork.WeproposetheuseofinteractionSybilattacks
8、[Yu2006].Ineachcase,meaningful,interac-graphstoimpartmeaningtoonlinesociallinksbyquanti-tiverelationshipswithfriendsarecriticaltoimprovingtrustfyinguserinterac