摘要
工程项目相似性分析是工程知识重用的关键环节,也是工程项目案例推理中最基本也是最关键的步骤。但是,目前分析工程项目的相似性问题多是根据经验进行定性分析,缺少十分有效的定量方法。本文在灰色关联分析中关联度计算方法的基础上,利用灰色距离提出一种工程项目相似性分析的定量方法。首先提取工程项目的重要属性特征并建立模型,其次采用遗传算法确定各属性特征的权重,最终计算各项目的灰色距离,根据灰色距离的排序,可以确定工程项目的相似性程度。实例分析结果验证了该方法的有效性。
Similarity analysis of engineering project is the key to knowledge reusing and the most fundamental and crucial step in CBR of engineering projects application. However, many methods of analyzing the similarity of the projects are based on qualitative analysis, die effective quantitative method is scarce. In this paper, a quantitative similarity analysis method is presented by gray distance based on the concept degree of correlation of Gray Relational Analysis. First of all, the important attributes of the projects are extracted and the model of attributes is established. Then GA is used to determine the weight of the attributes. At last, the gray distance of the projects is calculated. The similarity degree of the engineering projects is ascertained according to the order of gray distance. The effectiveness of the method is verified by experiment result.
出处
《计算机与现代化》
2010年第2期58-62,共5页
Computer and Modernization
