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An interpretation of focal elements as fuzzy sets

2003; Wiley; Volume: 18; Issue: 7 Linguagem: Inglês

10.1002/int.10118

1098-111X

Ewa Straszecka,

Rough Sets and Fuzzy Logic

International Journal of Intelligent SystemsVolume 18, Issue 7 p. 821-835 Research Article An interpretation of focal elements as fuzzy sets Ewa Straszecka, Ewa Straszecka [email protected] Division of Biomedical Electronics, Institute of Electronics, Silesian University of Technology, 16 Akademicka St., 44-100 Gliwice, PolandSearch for more papers by this author Ewa Straszecka, Ewa Straszecka [email protected] Division of Biomedical Electronics, Institute of Electronics, Silesian University of Technology, 16 Akademicka St., 44-100 Gliwice, PolandSearch for more papers by this author First published: 18 June 2003 https://doi.org/10.1002/int.10118Citations: 15AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract This article proposes defining focal elements in the Dempster-Shafer theory as fuzzy sets in an application to medical diagnosis support. Membership functions for medical parameters of "fuzzy" nature are constructed. A diagnosis support consists of Bel measure calculation only for these focal elements that have membership function values grater than a "truth" threshold. Coherence between membership function shapes and the truth threshold is shown and a new way of membership function designing is proposed. An extension of the "truth" threshold for nonfuzzy focal elements is proposed that make a unification of symptoms interpretation during diagnosis support possible. © 2003 Wiley Periodicals, Inc. References 1 Gordon J, Shortliffe EH. The Dempster-Shafer theory of evidence. In: BG Buchanan, EH Shortliffe, editors. Rule-based expert systems. Menlo Park, CA: Addison Wesley; 1984. pp. 272– 292. 2 Czogała E. 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