基于OE-近似概念格的不完备决策背景的规则提取

首先,通过对象诱导的三支条件近似概念格和三支决策近似概念格的细于关系,定义了不完备决策背景的OE-协调性;然后,在OE-协调的不完备决策背景上提出了对象诱导三支规则的提取方法, 分别从正面和负面的角度对规则进行获取和解释, 给出了冗余规则的判定定理及非冗余规则集的提取算法;最后,利用包含度理论,提出了带有置信度的三支规则提取方法, 提供了更为丰富的细节, 使得获取的规则更加完善。

Rules acquisition based on OE-approximate concept lattice in incomplete formal decision contexts

First, OE-consistency of incomplete formal decision contexts is defined through the finer relation between the object-induced three-way condition approximate concept lattice and the object-induced three-way decision approximate concept lattice. Then, object induced three-way rules acquisition method is proposed based on the OE-consistent incomplete formal decision contexts, rules are acquired and interpreted from positive and negative perspectives respectively. Moreover, the judgement theorem of redundant rules and the extraction algorithm of irredundant rule sets are given. Finally, three-way rules acquisition method with confidence is proposed by using the inclusion degree theory, which provide more details and make the acquired rules more complete.