基于全文检索的企业资源搜索系统

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1、ABSTRACTABSTRACTFull-textretrievalisanimportantinformationretrievaltechnology.Itisapowerfultoolfordealingwithnonstructuraldata,andisbasistheoryofthesearchengineisusednow.Thispaperpaysmoreattentioninapplicationoffull-textretrievaltechnologies;includehowtoestablishinvertedfiles;howtocompressinv

2、ertedfiles;howtoestablishindexoftheinvertedfilesandhowtoretrievalkeywordinit.Thebelowarticledoessomedeeplyresearchofthefull-textretrievaltechnology.1、Thearticlesummarizethedevelopmentofthefull-textretrievaltechnologyandnewresearchachievementinthedomesticcountryandaboard.Itwillrefertonotonlydo

3、cumentdatabasebutalsothedefinitionoftheretrieval.Andwillintroducesomenewtechnologysuchasinvertedfile,compressandindex.2、Thepaperresearchdatastructureoftherevertedfilesandcompressoftheindex.Designnewdatastructureoftherevertedfilestopromoteperformance.Analysisshowsthatnewmethodcangetbetterretri

4、evalresult.Deeplyresearchprocessesofthedictionarycreateandsimplyintroducetermfiltertechnology.3、Thepaperdiscussesthefull-textretrievaltechnologytoestablishtherevertedfiles,Analysisthetypicalinvertedfilesgenerationalgorithms,includememory-basedinvertedalgorithmsandmerging-basedalgorithms,Analy

5、sistheirtimeefficiency,spaceefficiencyindetail.4、Thepaperdiscussesthetechnologyofindexquery,anddiscussesindetailtheimplementationofminimalperfecthashfunctionswerediscussedbasedonBooleanqueriesandrankalgorithms.Keywords:full-textretrieval,revertedfiles,indexcompress,indexquery,minimalperfectha

6、shfunctions.II万方数据目录目录第一章绪论....................................................................................................................11.1计算机信息检索的发展............................................................................................11.2全文检索的定义.................................

7、.......................................................................21.3检索技术的分类........................................................................................................21.3.1基于概念的信息检索技术.......................................