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

Akın Osman Atagün and Hüseyin Kamacı

International Journal of Systems Science, 2023, vol. 54, issue 12, 2519-2535

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.

Date: 2023
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DOI: 10.1080/00207721.2023.2233971

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