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协调映射下覆盖粗糙集的不变性质 被引量:2

On invariance properties of covering-based rough sets under consistent function
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摘要 讨论覆盖粗糙集在协调映射下的不变性质,指出满的协调映射可以保证原覆盖近似空间的三类覆盖上近似与像覆盖近似空间覆盖上近似之间一一对应。而且原覆盖近似空间的约简的像为像覆盖近似空间的约简。 Invariance properties of covering-based rough sets under consistent function are discussed.It is proved that there exist one-to-one correspondences between covering upper approximations of original approximation space and cov-ering upper approximations of image approximation space under consistent function.Furthermore,the image of reduc-tion of original approximation space is the reduction of image approximation space.
出处 《山东大学学报(理学版)》 CAS CSCD 北大核心 2014年第8期92-96,共5页 Journal of Shandong University(Natural Science)
基金 国家自然科学基金资助项目(71140004) 福建省科技厅计划项目(2013J01028 2013J01265 2012R0090) 福建省教育厅计划项目(JA13198) 闽南师范大学杰出青年基金资助项目(SJ1118)
关键词 覆盖上 下近似算子 协调映射 约简 covering upper (lower)approximation operator consistent function reduction
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参考文献15

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二级参考文献9

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