微博中影响力的分析

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1、ABSTRACTWithtlledeVelopmentofW曲2．0technology，varioussocialmediahavespmnguplnrecentyears．AsapreVailingone，Microbloghasbeenanimponantwayinthedallymutualcommunicationsandinfonnationspreadamongpeople．DuetosomeunlquecharacteristicsMicroblogoWns，a铲owingn啪berofresearcheshaVepaidattentlonto1tand锄ongthese

2、researches，iIlfluenceisahottopic，includinginnuencemeaswementandinfluencemaximization．Eventhou曲someachievementshavebeenobtained，therearestillsomeproblems．Forex砌ple，amongalltheproposedalgo“山=tlstoapproximatetheinnuencemaXimization，somearetiIne．consumin2，somelnaccurateandsomeincludingtoomallyassumpt

3、ions．Regaurdingtheinnuencemeasure】ment，thereareindeedacertainnumberofnovelperspectivesdeservingexploration．Therefore，thispaperwillfocusontheinnuenceinMicroblogf．romboththetv旧topics．Accordingtothebidirectionali够ofuserinteractions，mispaper6rstestjmatestheInteractlVedegreebetweentwousersfromretweeti

4、ngstrength，commentingintensity，mentioningdens时andkeywordsimilar对thesefourfactofs．Then，consideringthatafollower’scontributionstotheinnuencesofhismerfolloweesvarvanddepend鲈eatlyontheinteractionsbetweenthem，anovelinnuencemeasurementalgoritllIllMBUserRankisputfonvard，whichisthebasisoftheinnuencemaxim

5、ization．Further，tobetterapproximatetheactivationprobabilityandreducethecomplexi劬amodi伍edalgorithmMBRankbasedonMBUserRankisgiven．WiththerallkingresuItsofMBRankonaUtheusersinthene帆ork，sometopra】：1l(edusersareselectedtoconstituteacandidateseedset．Asthisnewheuristicisintroduced。anovelinnuencemaximiza

6、tionalgorithmMB(heedyanditsimprovementMBCELFareproposed．Finally，acommonproblemindailylifewhetherthetop—krankedusersalwaysleadtotheinnuencemaximizationisdiscussedajldm11ingformecandidateseedsizeisillustrated。ThroughtheextensiVeexperimentsonTencentWeibodataset，thefollowjngconclusionsaremade．First，t

7、henewpr叩osedinnuencemeasurementalgoritl瑚MBUserRankisreaUyc01I】【petentingivingabetterrankingresultclosertorealiW．Second，combiningboththeadvarltagesofgreedy．basedandheuristic．basedalgorithns，MBCELFcanobtainagoodapproxima