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Strait fuzzy sets, strait fuzzy rough sets and their similarity measures-based decision making systems

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  • Akın Osman Atagün
  • Hüseyin Kamacı

Abstract

In this paper, a new uncertainty modelling concept called strait fuzzy set is introduced, which brings new perspectives to both theoretical and practical advances in fuzzy mathematics. This set type allows objects/points to be graded with fuzzy membership intervals that are partitions of [0,1] (so that the union of these partitions is [0,1] and their intersection is empty) instead of fuzzy membership degrees represented as exact values in [0,1]. Moreover, some basic operations and properties of strait fuzzy sets are studied in detail. The concept of strait fuzzy rough set is put forward and its theoretical aspects are discussed. In addition, two different similarity approaches are proposed for strait fuzzy sets and strait fuzzy rough sets, and applied to measure the similarity rates of vaccines against influenza viruses.

Suggested Citation

  • Akın Osman Atagün & Hüseyin Kamacı, 2023. "Strait fuzzy sets, strait fuzzy rough sets and their similarity measures-based decision making systems," International Journal of Systems Science, Taylor & Francis Journals, vol. 54(12), pages 2519-2535, September.
    • Handle: RePEc:taf:tsysxx:v:54:y:2023:i:12:p:2519-2535
    DOI: 10.1080/00207721.2023.2233971
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