中文信息檢索中相關(guān)算法的研究.pdf

1、X1031466分類號(hào)：TP3913密級(jí)UDC單位代碼：10146學(xué)號(hào)：450156遼寧科技大學(xué)碩士學(xué)位論文論文題目：中文信息檢索中相關(guān)算法的研究作者：薛靜指導(dǎo)教師姓名：遲呈英專業(yè)名稱：計(jì)算機(jī)應(yīng)用技術(shù)二Oo七年三月十七日遼寧科技大學(xué)碩士論文AbstractWiththedevelopmentofnetworktechnologythenumberofonlinetextsisincreasingatanexponentialspeedH

2、owtoacquireusefulinformationaccuratelyandefficientlybecomesthefocusofresearchers，whichacceleratesthedevelopmentoftextprocessingAutomaticcollectionandliquidationofrequiredinformationbecomeachallengeandachanceofdevelopment

3、AndintbrmationretrievaltechnologyisthekeytothesolutionoftheseproblemsAccordingtodifferentbackgroundsandapplicationpurpose，informationretrievaltechnologyhasevolvedintoseveralsubareas：textretrieval，textfiltering，textcatego

4、rization，textabstraction，andquestionansweringsystems，etcSincethemajorformofinformationiStextwediscussChinesetextinformationretrievalandrelevantissuesinthisthesisThemainobjectoftextretrievalstudyislarge—scale、non—structur

5、edreal—worldtextsforcategorization，retrieval，filtering，andabstractiontomeetuser’srequirementIssuesdiscussedinthisthesisincludeindexingtechnologyforimprovingretrievalefficiencyandrelevancefeedbackforimprovingsystemprecisi

6、onTextcategorizationcanbeusedasindependentapplicationsystemandasacomponentforaninformationretrievalsystemfororimprovingretrievalefficiency，TheproposethatahierarchicalmethodforChinesetextcategorizationbeusedinaretrievalsy