基于特征词条本体进化的微博话题跟踪-研究

《基于特征词条本体进化的微博话题跟踪-研究》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、南京航空航天大学硕士学位论文ABSTRACTMicroblogasanewkindofonlinesocialmediaplatform,developingrapidlyinrecentyearsandusedbymoreandmorepeople,hasbecomeaimportantplatformofthegeneralpublicaccesstoinformationandopinionsandincreasinglybecomethemostimportantsourceofinformationinthepublicopinion,rapidan

2、dtimelyaccesstoweibohotinformationbecametheurgentneedsofthepeople.Soitisnecessarytointroducethetopictrackingtechnologywhichallowsuserstoquicklyaccuratelygraspthemicrobloghottopic.Traditionaltopictrackingtechnologymainlyusesthekeywordmodelwhichhasbigdatadimensionandisnotaccurate.Soth

3、ispapertracktopicthroughextractingtheontologyofthemostrelevantinformation.atthesametimefortheflawsoftheindependentkeywordsonthetopicsemanticrepresentation,thispaperputsforwardtheconceptoffeatureitemsontologyandappliedtothetopictracking.Thispaperfirstintroducesthetopictrackingrelated

4、basictheory,detailsthetopictrackingprocess,thekeytechnologiesinvolvedandtheshortageoftheexistingtopictrackingmethods.atthesametimethispaperintroducesontologyknowledge,andanalyzesthecharacteristicsoftheontologyandtheconceptoftheontologyevolution.Thenaimingattheshortcomingsoftheexisti

5、ngtopictrackingmethods,analysesthesemanticfeaturesofweiboreport,putforwardthetopicrepresentationbasedonontology,andautomaticallybuildtheinitialtopicontology.thecharacteristicsofthesingleitemoftheinitialontologycannotfullyexpressthetopicsemanticinformation,andthusputsforwardtheconcep

6、toffeatureitemsontology.Thispapertracksmicroblogtopicbyautomaticallyextractingtopiccharacteristicsoftermstodescribetheeventsinthistopicinformationandtheontologyevolution.Finally,thispaperdesignthecorrespondingexperimentsystem,theexperimentiscarriedouttoverifytheproposedapproach.Thes

7、pecificinnovationsareasfollows:(1)Accordingtothesemanticcharacteristicsofmicroblogthispaperputsforwardthefeatureitemsontologytorepresentthemicrobloggingtopic.theFeature-Itemsontologycanbeconstructtedandevoluatedautomatically.(2)puttingforwardtopictrackingalgorithmbasedontheontologye

8、volutionofmicroblog