Gray system classification analysis and lake eutrophication assessment 灰色系統聚類分析與湖泊富營養程度評價
Using entropy theory to study on environment - economy systems classification and coordinative development 環境經濟系統分類及協調發展的熵研究
The analysis methods of fuzzy classification and gray system classification are taken advantage of calssification of deformation behavior of the dams . and fuzzy comprehensive appraisal on dams " deformation behavior is performed 應用模糊聚類分析和灰色聚類分析對大壩的變形性態進行分類,對大壩變形性態進行模糊綜合評判。