The Unified Lower and Upper Approximations Based on a Fuzzy Ideal
Machine Learning and Cybernetics, 2007 International Conference（2007）
摘要
In this paper, we consider a ring as a universal set and we assume that the knowledge about objects is restricted by a fuzzy ideal. Then we define the unified lower and upper approximations of a subset of a ring based on a fuzzy ideal. Some properties of the unified approximation operators are examined.
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关键词
approximation theory,fuzzy set theory,mathematical operators,rough set theory,fuzzy ideal,rough set theory,unified approximation operator,universal set approximation,Ideal,Ring,Rough set,Unified approximation
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