广义决策约简同相对约简的关系  

Relationships between Generalized Decision Reduction and Relative Reduction

作　　者：袁修久[1] 杨合俊[2] 张小水[1] 

机构地区：[1]空军工程大学理学院,陕西西安710051 [2]长安大学理学院,陕西西安710064

出　　处：《空军工程大学学报（自然科学版）》2005年第1期44-47,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：空军工程大学学术基金资助项目(2002X15)

摘　　要：对广义决策约简和相对约简的关系进行了研究。给出了广义决策约简是相对约简的充要条件和相对约简是广义决策约简的充要条件。特别的,得到了决策属性只取两个决策值的决策表,其广义决策约简同相对约简是等价的。通过本文使得利用广义决策约简计算相对约简和在一定的条件下利用相对约简计算广义决策约简成为可能。Sufficient and necessary conditions for a generalized decision reduction is a relative reduction and a relative reduction is a generalized reduction are provided. In particular, a decision table in which the decision attribute has only two values is obtained, and its generalized reduction and relative reduction are equivalent. The results make it possible that the relative reduction is found based on generalized reduction and in a certain conditions, the generalized reduction is found based on relative reduction.

关 键 词：粗糙集 广义决策约简 相对约简 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]