难识别地;
First several basic algorithms of Rough set methods are introduced with an analysis of the time complexity such as some efficient and incremental computing of indiscernibly relation and an improved algorithm of positive region.
具体研究工作如下:一.在Rough集的基本算法方面,提出了计算等价类的快速算法和增量算法以及计算正区域的改进算法,分析了算法的时间复杂度;
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