粗糙集與灰色關(guān)聯(lián)理論在案例檢索中的應(yīng)用研究

1、合肥工業(yè)大學(xué)碩士學(xué)位論文粗糙集與灰色關(guān)聯(lián)理論在案例檢索中的應(yīng)用研究姓名：王宏宇申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：管理信息學(xué)指導(dǎo)教師：倪志偉20100301RoughSetandGreyrelationalTheoryinCasebasedReasoningaseDaseKeasonlnglAbstractCaseBasedReasoningisanimportantanalogicalreasoningtechniqueinartificiali

2、ntelligenceItiswidelyusedinthedomainsthathaverichexperience(cases)，butlackofcomprehensiveandsoundtheoriesHowever，therearestillsomedifficultiesinsolvingpracticalproblemsonlywitllcasebasedreasoning。Thedeepeningandimproveme

3、ntofstudyofsometheoreticalmethods，suchasroughsetandgreyrelationalanalysis，provideagoodsolutionforthefurtherapplicationofcase—basedreasoningThisdissertationbeginswithabriefintroductionoftheworkflowofcase—basedreasoning，th

4、econceptionsandtheoriesofroughsetandgreyrelationalanalysisThenintegratesthethreetheories，anddesignamodelofcaseretrievalbasedonroughsetattributereductionandgreysimilaritycalculationFirstly，thismodelscattersthecontinuousat

5、tributeswithroughsettheory，calculatesthedifferentimportanceoftheconditionattributestothedecisionmakingattributes，andthendeletestheconditionattributeswhichhavesmallimportance，calculatetheweightcoefficientofthereservedcond

6、itionattributesSecondly，thisdissertationcombinesgrey—relationaltheoryandEuclideandistance，andproposesanewmethodforcomputingdegreeofsimilarityincase—basedreasoning，andcalculatesthesimilaritybetweendifferentcasesAttributer

7、eductionandtheimprovementofsimilarityalgorithmimprovethesearchefficiencyandsimilarityresolutionThirdly，thisdissertationcitesthecaseofweatherforecastasanapplicationexampletoexplaintheprocessofthemodelAt1ast，themainconclus