计算机科学 ›› 2015, Vol. 42 ›› Issue (8): 36-39.
鞠恒荣,杨习贝,戚 湧,杨静宇
JU Heng-rong, YANG Xi-bei, QI Yong and YANG Jing-yu
摘要: 单调性在经典粗糙集属性约简过程中发挥着重要的作用。然而,在一些泛化模型(如量化粗糙集模型)中该性质并不存在。针对该问题,提出了量化粗糙集模型中下近似单调约简的定义,并给出了求得该约简的启发式方法。实验结果表明,相较于下近似保持约简算法,下近似单调约简算法不仅耗时短,而且增加了由正域和边界域表示的确定性,同时降低了由边界域带来的不确定性。
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