基于灰色关联的设计方案实例模糊预分类方法研究
Fuzzy Pre-classification of Design Scheme Case Based on Grey Relevancy Method
作者：李敬敏(四川大学 制造科学与工程学院,四川 成都 610065)；廖洪富(四川大学 制造科学与工程学院,四川 成都 610065)；刘勇谋(四川大学 制造科学与工程学院,四川 成都 610065)
Author：(School of Manufacturing Sci. & Eng., Sichuan Univ., Chengdu 610065, China)；(School of Manufacturing Sci. & Eng., Sichuan Univ., Chengdu 610065, China)；(School of Manufacturing Sci. & Eng., Sichuan Univ., Chengdu 610065, China)
收稿日期：2008-01-20 年卷（期）页码：2008,40(4):187-190
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：模糊聚类分析；基于实例推理；灰色关联度；方案设计
Key words：Fuzzy clustering analysis; case-based reasoning; grey relation degree; scheme design
基金项目：
中文摘要
相似实例的检索能力是基于实例推理的关键技术之一。为提高实例检索效率，提出一种基于传递闭包的设计方案实例模糊预分类方法。为提高模糊相似度计算的准确性，综合考虑了环境因素和影响权重，提出一种基于灰色关联度的设计方案模糊相似矩阵建立方法，并给出了计算步骤。通过将待分类的决策矩阵转变成模糊相似矩阵，再将模糊相似矩阵转变成模糊等价矩阵，较好的实现了设计方案实例的模糊聚类，并给出运行实例。结果表明，此方法可以给出设计方案间的相似程度和分类的归并过程，为相似设计方案的检索提供动态变化的搜索范围和更好的数据支持。
英文摘要
Similar case retrieving is one of key technologies in based case reasoning system. In order to improve the retrieving efficiency, a method of transferring closed-package-based fuzzy pre-classification for design scheme was proposed. For calculating the fuzzy similarity more accurately, by taking into account of the factors of environment and weight, a method of grey relation degree-based building fuzzy-similar matrix was put forward and its calculation step was given. Then fuzzy clustering of design schemes can be achieved by changing the decision making matrix into fuzzy-similar matrix and changing the fuzzy-similar matrix into fuzzy-equivalent matrix. A case study showed that the proposed method can give the similarity between design schemes and the classified process, and can provide a dynamic searching scope and a better data basis for similar design case retrieving.
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