Soft rough fuzzy sets and soft fuzzy rough sets
Fuzzy set theory, soft set theory and rough set theory are mathematical tools for dealing with uncertainties and are closely related. Feng et al. introduced the notions of rough soft set, soft rough set and soft rough fuzzy set by combining fuzzy set, rough set and soft set all together. This paper...
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| Veröffentlicht in: | Computers & mathematics with applications (1987) 2011-12, Vol.62 (12), p.4635-4645 |
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| container_issue | 12 |
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| container_title | Computers & mathematics with applications (1987) |
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| creator | Meng, Dan Zhang, Xiaohong Qin, Keyun |
| description | Fuzzy set theory, soft set theory and rough set theory are mathematical tools for dealing with uncertainties and are closely related. Feng et al. introduced the notions of rough soft set, soft rough set and soft rough fuzzy set by combining fuzzy set, rough set and soft set all together. This paper is devoted to the further discussion of the combinations of fuzzy set, rough set and soft set. A new soft rough set model is proposed and its properties are derived. Furthermore, fuzzy soft set is employed to granulate the universe of discourse and a more general model called soft fuzzy rough set is established. The lower and upper approximation operators are presented and their related properties are surveyed. |
| doi_str_mv | 10.1016/j.camwa.2011.10.049 |
| format | Article |
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| source | Elsevier ScienceDirect; EZB-FREE-00999 freely available EZB journals |
| subjects | Approximation Fuzzy Fuzzy logic Fuzzy set Fuzzy set theory Mathematical analysis Mathematical models Rough set Set theory Soft fuzzy rough set Soft rough fuzzy set Soft rough set Soft set Universe |
| title | Soft rough fuzzy sets and soft fuzzy rough sets |
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