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ID:34587689
大小:2.38 MB
页数:58页
时间:2019-03-08
《基于全文检索的企业资源搜索系统》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
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.......................................
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