基于粒计算的语言概念决策形式背景分析

针对具有语言值信息的决策问题,结合语言术语集和信息系统,提出语言决策信息系统和语言概念,并讨论语言概念的相关性质。通过转化语言决策信息系统,提出语言概念决策形式背景。为扩展语言概念格的内涵和外延,压缩语言概念的规模,通过将语言概念粒化,提出粒化语言概念决策形式背景。将粒计算引入到粒化语言概念决策形式背景中,利用覆盖度与置信度,构造一种基于粒计算的语言概念决策形式背景的规则提取模型。医学诊断实例表明该方法在获取高质量规则中的有效性及实用性。

Linguistic concept formal decision context analysis based on granular computing

Aiming at the decision problem with linguistic value information, combining linguistic terminology and information system, the linguistic decision information system and linguistic concept was proposed, and the related properties of linguistic concept were discussed. By transforming linguistic decision information systems, the linguistic concept formal decision context was proposed. In order to expand the intent and extent of the linguistic concept lattice, the scale of the linguistic concept was compressed, and the granular linguistic concept formal decision context was proposed by granulating the linguistic concept. The granular computing was introduced into the granular linguistic concept formal decision context, and a rule extraction model based on granular computing for linguistic concept formal decision context was constructed by using coverage and confidence. Medical diagnostic examples illustrated the effectiveness and utility of this method in obtaining high quality rules.