基于关系网络的微博话题挖掘

基于关系网络的微博话题挖掘

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页数:52页

时间:2019-03-03

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1、哈尔滨工业大学工程硕士学位论文AbstractRecently,microbloghasarapiddevelopment.Usersinmicroblognotonlycanmakefriends,chatwithothersandpublishatweet,butalsocaninitiateatopic,commentothertopics.Itisverymeaningfultoanalyzeandminemicroblogtopic.Existingrelatedworksaboutminingmicroblogtopicsmostlyarebasedontex

2、tanalysis.Thetextinmicroblogisalwaysshorttext,andithasthecharacteristicsofsparsedataandlotsofnoise.Itbringsdifficultiesforanalysisofmicroblogtopic.Microblogisasocialmediawhichisbasedonrelationship.Userswhohavecloserelationalwaysfocusonsimilartopics.Theresultsarenotgoodenoughwhenweminemicr

3、oblogbaseontextanalysispurely.Sowestartfromtherelationbetweenusers,andweproposeamodelofrelationnetworktominemicrobloghottopics.Inthispaper,weusethismodelofrelationnetworktodevelopamicroblogtopicminingsystembasedonrelationnetwork,andweachievecertainresults.Thearticlehasproposedamethodofpre

4、sentingmicroblogtopicbasedonrelationnetwork.Throughanalysisofmicroblogtopic,wefoundthatusershavestatesintheprocessofdiffusionofmicroblogtopicbetweenthem.Andthestatesofuserswillchangeinthisprocess.Users’operationsinmicroblogcausechangeofusers’states.Inmicroblog,users’behaviorsincludepostin

5、gatweet,commentingatweet,forwardingatweetand@otherusers.Theusers’operationsalsogeneraterelationbetweenusers.Weproposemethodofpresentingmicroblogtopicbasedonrelationnetworkbecauseofthis.Inthemicroblogtopicrelationnetwork,thenodesrepresentusersandtheedgesrepresenttherelationbetweenusersinmi

6、croblogtopic.Afterconstructingthetopicrelationnetwork,wepre-analyzetheconstructingtopicrelationnetworks,includingthebetweennesscentralitydistribution,closenesscentralitydistribution,networkclusteringcoefficientandsoon.Thearticleproposedamethodbasedonmicroblogtopicrelationnetwork.Weminedth

7、erelationinrealhottopicsfromtheSinaWeibo.AllfourrealhottopicsinSinaWeiboare"Beijingcollegeentranceexaminationreform","inter-provincialmedicalreimbursement","pensions"and"extendingthepaymentperiod".Intheexperimentofminingmicroblogtopic,wealsousethecurrentmethodbasedo

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