基于web的数字化资源全文检索系统的设计与实现

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1、西安电子科技大学硕士学位论文基于web的数字化资源全文检索系统的设计与实现姓名：马静申请学位级别：硕士专业：教育技术学指导教师：詹海生20100101᪈㾱᪈㾱ؑ᚟ᢰᵟⲴ䗵䙏ਁኅ઼з㔤㖁Ⲵࠪ⧠ӗ⭏Ҷབྷ䟿Ⲵᮠᦞˈ⢩࡛ᱟԕdocṬᔿǃpdfṬᔿǃtxtṬᔿⲴᮠᦞ੸⎧䟿໎䮯Ⲵ䎻࣯DŽྲօਸ⨶Ⲵ㓴㓷઼ᆈۘ䘉Ӌᔲᶴᮠᦞˈᨀ儈Ự㍒Ⲵ᭸⦷ˈᱟޘ᮷Ự㍒亶ฏ䶒ѤⲴањ䟽㾱䰞仈DŽᵜ䈮仈Ⲵ⹄ウԫ࣑ᱟ䇮䇑ᇎ⧠ањѝ᮷ޘ᮷Ự㍒㌫㔏ˈᇎ⧠ሩൠᯩᘇ䍴ᯉⲴޘ᮷Ự㍒࣏㜭DŽᵜ䈮仈␡ޕ⹄ウҶޘ᮷Ự㍒Ⲵ৏⨶ˈवᤜ㍒ᕅᇊѹǃ㍒ᕅ޵ᇩǃ㍒ᕅࡋᔪ઼㍒ᕅᩌ㍒DŽᵜ䈮仈䟷⭘LuceneᔰⓀᩌ㍒ᢰᵟDŽᵜ᮷䈖㓶࠶

2、᷀ҶLuceneⲴ㔃ᶴ㓴ᡀǃ㍒ᕅ䗷〻ǃᩌ㍒䗷〻ǃᮠᦞ⍱㓴㓷઼Ự㍒व㔃ᶴ৺਴㠚࣏㜭DŽᵜ䈮仈㍒ᕅᆈۘ㔃ᶴ䟷⭘قᧂ㺘㔃ᶴˈᴹ᭸Ⲵᆈਆقᧂ㺘઼ᘛ䙏૽ᓄᩌ㍒᫽֌൘ޘ᮷ᩌ㍒亶ฏѝ䎧⵰㠣ޣ䟽㾱Ⲵ֌⭘DŽᵜ᮷ሩ㍒ᕅᆈۘ㔃ᶴ䘋㹼Ҷ␡ޕⲴ࠶᷀ˈ䇮䇑а⿽㜭ཏᴹ᭸ᨀ儈㍒ᕅ঻㕙⦷Ⲵ㍒ᕅ᮷ẓ䟽ᧂ㇇⌅üü㚊㊫㍒ᕅ䟽ᧂ㇇⌅DŽ䈕㇇⌅ሶ⴨լᓖ儈Ⲵ᮷ẓᧂࡇ൘а䎧ˈӾ㘼߿ቁ㕆⸱᮷ẓ㕆ਧѻ䰤Ⲵᐞ٬ᡰ䴰㾱Ⲵᆇ㢲ᮠˈ䗮ࡠᨀ儈ᩌ㍒᭸⦷Ⲵ᭸᷌DŽ䙊䗷⍻䈅ˈ㚊㊫㍒ᕅ䟽ᧂ㇇⌅ਟԕ᰾ᱮ߿ቁ㍒ᕅᆈۘオ䰤ˈ䗮ࡠ㍒ᕅ঻㕙᭸᷌ީ䭤䈃φޞᮽỶ㍘Lucene㚐㊱㍘ᕋ䠃ᧈ㇍⌋AbstractAbstractTherapidde

3、velopmentofinformationtechnologiesandtheadventoftheWore-WideWebhaveresultedinatremendousincreaseintheamountofavailableinformation,especiallythedataintheformatofdocǃpdfandtxtarealsoexpansionrapidly.Facingthemoreandmorepopulartrendofthenetworkelectronicinformation,howtoreasonablear

4、rangementtheformatandcontentoftheinformationandhowtoletthemtobringthebiggestconveniencetotheinternetusers,thisistheresearchgoalofthisthesis.TheresearchaimofthissubjectistobuildachorographyFull-TextretrievalsystembasedonB/Swhichaccessedviaweb.Theresearchtargetofthissubjectistodesi

5、gnanddevelopaChinesefull-textretrievalsystem,thusrealizingthefull-textsearchfunctionalityoflocalgazetteers.AnimprovedinvertedindexalgorithmnamedClusterindexrealignalgorithmisdesignedandusedtostorethecompressedmassindexfile,forreducingtheindexstoragespaceandimproveretrievalefficie

6、ncyresults.Thesubjectstudiedtheprincipaloffull-textretrievalindetails,includingtheprincipleoffull-textretrievalindex,indexcontent,indexingandsearch.Thispaperanalysesthestructure,indexprocess,searchprocess,thedataflow,organizationstructureandtheirrespectivebagandretrievalfunctions

7、ofLucene.Theindexstoragestructurehasbeenanalyzedfurtherinthispaper,designinganalgorithmwhichcouldeffectivelyimprovethecompressionratioofindex----clusterindexrealignalgorithm.Thisalgorithmarraythehighsimilardocumenttogetherinordertodecreasethesmalld-gapfrequencythroughclustering,w

8、hichwouldmaketheindexcompressionmoreeffe