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中文摘要：
叶东毅教授在文中指出Hu Xiaohua等学者提出的约简方法在某些情况下会给出错误的结果,本文通过分析得出叶的方法实际上就是正域约简,而Hu的方法实质上保持边界域划分不变,与叶东毅教授提出的约简方法只是标准不同,而无所谓对错问题.在此基础上,阐明了决策表各种约简标准的关系,并给出了当两个约简标准存在强弱关系时,其约简结果之间的关系.
英文摘要：
Prof.Ye Dongyi has pointed out in his paper that the reduction approach proposed by Hu Xiaohua et al.will lead to wrong results under some circumstances.In this paper,we find out through analysis that Ye＇s approach is actually positive region reduction,whereas Hu＇s approach is to make sure that the boundary regions are kept unchanged.The main difference between the two approaches is that each use a different standard,thus there is no ground to judge which one is correct or wrong.What is more,we clarify the relationship among various reduction standards for decision table,and we also give the relationship between reduction results when there is a strong-week correlation between two reduction standards.
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