公安執(zhí)法監(jiān)督管理中的文本理解技術的研究及其應用.pdf

1、分類號UDC密級——編號魚2【垃Q業(yè)互學位論文李文，指導教師姓名：王僉延熬援直差主盍堂鹽簋主!墜申請學位級別：亟專業(yè)名稱：鹽篡扭鏊佳曼理迨論文提交日期：2Q墮生5旦論文答辯日期：呈堂生魚旦日學位授予單位和日期：直昌盔堂2壁壁墨生旦目答辯委員會主席：評閱人：2005年5月日碩二匕學位論文：公安執(zhí)法監(jiān)督管理中的文本理解技術的研究及其應用AbstractWiththedevelopmentofthesocialinformationtechn

2、ologypeople02esoeagertOcommunicatewiththecomputerbynaturallanguageNaturalLanguageUnderstandingisoneofthemostchallengingproblemsinthecomputerscience，anditisalsoonebreakthroughofthenewgenerationcomputerMoreandmorecountries

3、intheworldarepayingattentiontoitsresearch，andtextunderstandingbelongstotheapplicationsofthenaturallanguageunderstandingNowSOmanyorganizations，nomattertheyarebusinessenterprises，researchinstitutes，orgovernmentdepartments，

4、arefacingagreatdealofinformationtodealwithHowtohelptheuserslocateanddeliverinformationisonebigaimofinformationmanagementTheresearchobjectinthispaperistheChinesetextusedtOdescribethedetailsofacase，andwediscussedthemethods

5、fortextclassificationinnaturallanguageunderstanding，andrealizedthetextautomaticclassificationaccordingtOthecontentsInthispaperwedescribedthebasicprinciplesoftextclassification，mainalgorithmsandtechnologiesineachphaseofte

6、xtclassification，andthenmadesomecomparisonsWeimprovedthealgorithmoftextfeatureextraction，andalsointroducedthelatentsemanticanalysisusedtoinformationselection，whichcartdecreasethedimensionsoftextvectorspaceandimprovethecl

7、assificationperformanceAprimaryautomaticclassificationsystemforthelegaltextwascompletedinthispaperWdRenby：LiWen(ComputerSoftwareandTheory)Directedby：ProfW，angMinf1va—n—Keywords：NaturalLanguageUnderstanding，TextClassifica