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1、東南大學博士學位論文Web訪問挖掘研究姓名：宋愛波申請學位級別：博士專業(yè)：計算機應(yīng)用技術(shù)指導教師：董逸生20030801于Petri網(wǎng)方法。這兩種方法，都不需要用戶的參與協(xié)作，完全是自動的?；赑etri網(wǎng)方法，具有直觀性和不需要反復計算推薦集合的優(yōu)點，而且Petri網(wǎng)能很自然的描述web中的多內(nèi)容并發(fā)顯示和并發(fā)瀏覽。關(guān)鍵詞數(shù)據(jù)挖掘web訪問挖掘個性化站點管理Petri網(wǎng)IIResearchonWebAccessMiningAbs仃actToday,theWorldWideWebisrapidlyemergingasanimportantmedium
2、forthedissemination，exchange，andgettingofinformation．Accordingtomostpredictions，themajorityofhumaninformationwillbeavailableontheWebintenyears．Thesehugeamountsofdataraiseagrandchallenge，namely，howtoturntheWebintomoreusefulinformationutility．Atpresent，themaintoolsofgettinginform
3、ationarestillsearchengines．Today’Ssearchengines，however，areplaguedbythefollowingfourproblems：thelowprecisionproblem；thelowrecallproblem；Alimitedqueryinterfacethatisonlybasedonkeyword—orientedsearch，andhavenofunctionofcustomizationtoindividualusers．Theseproblems，inturn，Canbeattr
4、ibutedtothefollowingcharacteristicsoftheWeb．Firstandforemost，theWebisahuge，diverseanddynamiccollectionofinterlinkedhypertextdocuments．Furthermore，itiswidelybelievedthat99％oftheinformationontheWebisofnointerestto99％ofthepeople．Second，exceptforhyperlinks，theWebislargelyunstructur
5、ed．Finally，mostinformationontheWebisintheformofHTMLdocumentsforwhichanalysisandextractionofcontentisverydifficult．Therefore，itisnoteasytoovercomeallproblemscausedbysearchengines．Inthisthesis，weusewebaccessminingtodiscoverlaserbrowsingpatternssuchasaims，interests，andpreferences．
6、Thenthesepatternsareutilizedinimprovingthestructureofwebsitesandthemannerofwebservice．Thus，wecallhelpusersgettingwhattheyneedmoreeasilybypersonalizedinformationserviceandautomatedsiteadministration．ItisalsoimportantforE—commercetominethewebaccessdata．Thesignificanceliesinimprov
7、ingthecustomerrelationshipmanagement，assistinginmakingdecisionandsecuritymanagement，andhelpingmerchandisersimplementingaone-to-ODemarketingstrategy．Thedissertationiscomposedofthefollowingparts：(1)Wediscussvariousproblemsmetduringdatapreparinginwebaccessmining，thengiveasimplemet
8、hodtoidentifyuseraccesstransactionsaccordingtohostaddr
