基于RS理论的快速属性约简求核方法 关键词：属性约简；属性核；差别矩阵 [gap=1200]Key words：attribute reduction；attribute core；discernibility matrix
基于36个网页-相关网页
Combining the max rate sampling strategy and the discernibility matrix together creates the dynamic reduct algorithm.
结合概率抽样策略和差别矩阵构造出一个动态约简算法。
参考来源 - 基于粗糙集理论的动态约简研究The existing attribute reduction algorithms,including the one based on discernible matrix,the one based on the importance of attributes and the one based on frequency of attributes,are all introduced and analyzed in detail.
属性约简算法主要介绍和分析了基于差别矩阵的属性约简算法、基于属性重要性的属性约简算法和基于属性频度的属性约简算法。
参考来源 - 粗糙集理论约简算法及其应用研究And the formulas computing the number of non-empty elements in these discernibility matrices and some theorems were introduced.
给出了这几种差别矩阵非空元素的计算公式及其相关定理。
参考来源 - 基于差别矩阵的Rough集属性约简算法·2,447,543篇论文数据，部分数据来源于NoteExpress
其次，我们对差别矩阵差别函数的方法进行了研究。
Secondly, we investigate the method of discernibility matrix and function.
论文的改进算法以属性的频率作为选择属性的启发信息，由过滤差别矩阵得到属性的频率。
In the improved algorithm in this paper, using frequency as the heuristic information of attributes selection, getting frequency of attributes from the filtered discernibility matrix.
在不完备信息系统基于差别矩阵的属性约简算法中，相容类和最大相容类中的对象具有不确定性。
In incomplete information system, objects of the tolerance class and maximal consistent block in the attribute reduction algorithm based on discernibility matrix are uncertain.
应用推荐