Web11 de jul. de 2014 · The study of definable sets in various generalized rough set models would provide better understanding to these models. Some algebraic structures of all definable sets have been investigated, and the relationships among the definable sets, the inner definable sets and the outer definable sets have been presented. In this paper, we … Web31 de mar. de 2024 · TL;DR: Three new types of fuzzy covering-based rough set models are proposed by introducing a new notion of a fuzzy complementary -neighborhood by introducing some new definitions of fuzzy -covering approximation spaces. Abstract: Fuzzy coverings are a natural extension of the coverings by replacing crisp sets with fuzzy …
On three types of $L$-fuzzy $\beta$-covering-based rough sets
Web12 de mai. de 2006 · Rough sets, a technique of granular computing, deal with the vagueness and granularity in information systems. They are based on equivalence relations on a set, or equivalently, on a partition on the set. Covering is an extension of a partition and a more feasible concept for coping with incompleteness in information, thus the … Web7 de jul. de 2016 · Definition 3. Let ( U , C) be a covering approximation space. Then, by combining lower approximation operators of types 6, 7, 8, and 10 with upper approximation operators of types 1, 4, and 5, we can define twelve different types of covering based rough set as follows: C ¯ 61 ( X) = ∪ { C F r i e n d s ( x) x ∈ X - C 6. ̲. hierarchy of documents
On Three Types of Soft Rough Covering-Based Fuzzy Sets - Hindawi
Web7 de jul. de 2016 · Definition 3. Let ( U , C) be a covering approximation space. Then, by combining lower approximation operators of types 6, 7, 8, and 10 with upper … WebCovering-based multigranulation fuzzy rough sets are a natural extension of the multigranulation rough sets by replacing crisp sets with fuzzy sets. Recently, the … Web4 de set. de 2014 · These three types of covering-based rough sets are based on three kinds of neighborhoods: the neighborhood, the complementary neighborhood and the indiscernible neighborhood, respectively. hierarchy of dna structure