This paper discusses mainly the principal of Grey Theory and the method of relational grade analyses, Grey clustering, Grey prediction and Grey modeling.
简要介绍了灰色理论的基本原理及灰关联分析、灰色聚类、灰色预测、灰色建模四种基本方法。
Based on the grey system theory, a grey assessment model of groundwater quality is built by combining the method of grey relational grade analysis and the method of single factor contaminant index.
以灰色系统理论为基础，把灰色关联度分析方法和单因子污染指数法相结合，构造了一种适合于评价地下水质量的灰色模型。
The relational grade analysis of the grey theory was applied in multifactorial quantitative evaluation of new spring peanut varieties in Fujian province.
应用灰色系统理论中的关联度分析法，对福建省近年来育成的春花生新品种进行了综合定量评价。
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