摘要
实例库维护是基于实例的推理方法中的一项核心工作,目前国内外关于实例库维护方法的研究还存在一些不足.针对机械产品设计实例的特点,提出一种基于模糊粗糙集理论的实例库维护方法.首先定义了产品设计实例特征权重计算、实例库族集的划分以及实例属性的约简方法;在此基础上,引入覆盖度和可触及方法对典型实例进行筛简.最后开发了面向工程机械设计的实例库维护系统,并给出了具体应用效果.
The case base maintenance is the core of case-based reasoning （CBR）. There are still some shortages in current related researches. In this paper, for mechanical product design, a case base maintenance method based on fuzzy-rough set is put forward. Firstly, the case feature weight calculation, case base family partition, case feature reduction of product design cases are discussed. Secondly, the concepts of coverage and reach-ability are introduced to filter typical cases in the case base. Finally, a case base maintenance system for construction machines is developed, and an example is given to show the system＇s effect.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2012年第6期816-821,共6页
Journal of Computer-Aided Design & Computer Graphics
基金
江苏省高技术计划研究项目(BG2003023)
