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SchoolofComputerScienceandInformationSystems,BirkbeckCollege

By S. Nascimento, B. Mirkin and F. Moura-pires

Abstract

Abstract. Thegoalof thispaperisto furtherinvestigatetheextreme behaviouroftheproportionalmembershipmodel(FCPM)incontrastto thecentraltendencyoffuzzyc-means(FCM).Adatasetfromthe¯eld ofpsychiatryhasbeenusedfortheexperimentalstudy,wheretheclusterprototypesareindeedextreme,expressingtheconceptof`idealtype'. Whileaugmentingtheoriginaldatasetwithpatientsbearinglesssevere syndromes,itisshownthattheprototypesfoundbyFCMarechanged towardsthemoremoderatecharacteristicsofthedata,incontrastwith thealmostunchangedprototypesfoundbyFCPM,highlightingitssuitabilitytomodeltheconceptof`idealtype'

Topics: Fuzzy clustering, fuzzy model identi¯cation, proportional
Year: 2009
OAI identifier: oai:CiteSeerX.psu:10.1.1.134.5422
Provided by: CiteSeerX
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