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A new approximation operator of attribute rough sets. (Chinese. English summary) Zbl 1389.68117

Summary: Attribute rough sets are defined by the element attribute measures’ infimum or supremum in an equivalent class. As a result of not considering the elements whose attribute measures are between the minimum and maximum, some useful information of these elements may be lost in information processing. This paper presents a new operator of attribute rough sets and points out its several related properties. At last, an example is given to prove that the measures are rational.

MSC:

68T37 Reasoning under uncertainty in the context of artificial intelligence
03E72 Theory of fuzzy sets, etc.
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