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时间:2019-07-02
《基于粗糙集理论的唐家山堰塞湖泄洪问题建模与分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、大连交通大学硕士学位论文基于粗糙集理论的唐家山堰塞湖泄洪问题建模与分析姓名:栾爽申请学位级别:硕士专业:计算机应用技术指导教师:孙辉20091201人连交通人学T学硕十学位论文暑詈詈鼍暑鼍皇暑詈詈皇詈穹暑暑詈昌皇詈皇詈皇詈皇!詈墨詈毫詈詈詈詈詈詈詈詈詈詈鼍詈詈詈毫詈詈詈詈詈詈詈詈詈暑詈穹暑皇皇暑詈詈!詈皇!鼍詈暑詈詈皇詈毫詈暑鼍昌皇詈毫詈暑詈置詈量皇詈皇詈暑詈鼍n,5,m毫詈鼍AbstractThispaper,modelingandanalysisofTangjiaHillBarrierLake’Sflooddisch
2、argedproblemuseroughsettheory.ThedataofTangjiaHillbarrierlake’Sflooddischargedproblemcomesfromthedailynewsreport.SOthesedataaremixed,chaotic,multi-character,neededforpre—processing.Inthispaper,First,noiseanddiscretizationweredealedwith,andthencontactwereremovedby
3、backalgorithm,thenthetemporaldecisioninformationsystemconveatodecisioninformationsystem,andthisdecisioninformationsystemisupdatedeverydaywiththeincreaseofthedata.Attributereductionofroughsettheoryisthecorecontentofthestudy.Asthetargetincreased,informationsystemsn
4、eedtobeupdated,Becauseofthisuniquefeature,incrementalattributereductionalgorithmcameintobeing.Mostincrementalattributereductionalgorithmimprovetheefficiencyofreductionbyimprovetheidentificationmatrix;Inthispaper,theproblemTangjiashanLakefloodactual,proposedsepara
5、telybyasingleincrementalattributereductionalgorithmandmulti-incrementalattributereductionalgorithm,bothalgorithmsareclassifiedintheoriginalsystembeimprovedidentificationsets,allowingtofindfasterandmoreaccuratedelineationofthenewsystemidentificationset;Inthispaper
6、,TangjiashanLakefloodasanexample,wereusedtodistinguishbetweenthesetwoalgorithmswiththematrix—basedreductionalgorithmtocompareandfoundthatwiththeneedtodistinguishmatricesreductionoperation98canbediscemibilitymatrix,whiletheincrementalattributereductionwithasingleo
7、peratoronlyneedstobedivided24timeswillbeabletoidentifysets;Similarly,Multi-incrementalattributereductionCanalsosignificantlyreducecomputationalcomplexity.Classicalroughsettheoryisbasedontheindiscemibilityrelation,andwiththistheory,theestablishedmodelofdatalackoft
8、hecapacityofadaptationtonoisedata,Andtheproblemofdatalossisnotwellresolved.Inthispaper,withtheclassicalroughsettheoryTangjiashanLakefloodmodelingproblem,man-ma
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