基于粗糙集理論的若干應(yīng)用技術(shù)研究.pdf

1、Y1132015分類Q籃2：2密級硒』￡舒耘史學碩士學位論文基于粗糙集理論的若干應(yīng)用技術(shù)研究姚紅霞導師姓名職稱：鞏增泰教授專業(yè)名稱：計算數(shù)學研究方向：模糊分析學及其應(yīng)用論文答辯日期：2007年5月學位授予日期：2007年6月答辯委員會主席：評閱人：二零零七年五月AbstractRoughsettheoryisanexcellentmathematicaltoolfordealingwithvague，uncertain，imprecis

2、einformation，ithasbeensuccessfullyappliedinmanyfieldsNowadays，althoughmuchresearchhasbeentakenonthesideofroughsettheoryandapplication，itcannotmeettheneedforsolvingthepracticalproblemsInthispaper，weconsidertheinsufficienc

3、yaboutroughsetfordealwithuncertainproblemsandapplications，classicMroughsetmodelisextendedFurthermore，fuzzysettheor弘thetheoryofcertaintyevidencetheoryarestudiedFirstlyanewmethodisproposedforcalculationthesimilarityaboutdi

4、fferentattributers，namelythefuzzyclusteringdecisionbasedonthesignificanceofattributersBytheproposedmethod，thedifferentattributersarecoupled(especiallythequantitativeattributesandthequalitativeat—tributes)inthefuzzyinform

5、ationtableorinformationtableconsideringthesignificanceofdifferentattributersInadditions，thequestionsofclusteringaboutquantitativeattributesandqualitativeattributesininformationtablearesolved，and，thedecisiontablesaresetup

6、accordancewiththeresultsoffuzzyclusterSecondlyconsideringtheshortcomingofclassicalroughsetinrulesac—quisition，distributedBayesianroughsetmodelisproposed，andcertaintyrulesareacquiredusingtheproposedmethod，thenthefunctiono