计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (21): 75-76.
• 学术探讨 • 上一篇 下一篇
高 岩1,2,秦克云1
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GAO Yan1,2,QIN Ke-yun1
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摘要: 研究Bonikowski覆盖近似算子。借助覆盖近似空间的代表元,证明了下近似算子保交、上近似算子保并、以及上近似算子单调等是相互等价的,另外给出了上、下近似算子对偶的等价条件。
关键词: 粗糙集, 覆盖, 近似算子, 代表元
Abstract: This paper is devoted to the discussion of covering-based approximation operators.It is proved that multiplication for covering lower approximation operator,addition for covering upper approximation operator and monotone for covering upper approximation operator are equivalent.A necessary and sufficient condition for covering upper approximation operator and covering upper approximation operator are dual to each other is given.
Key words: rough sets, cover, approximation operators, representative element
高 岩1,2,秦克云1. 基于覆盖的粗糙近似算子[J]. 计算机工程与应用, 2007, 43(21): 75-76.
GAO Yan1,2,QIN Ke-yun1. On covering-based rough approximation operators[J]. Computer Engineering and Applications, 2007, 43(21): 75-76.
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