The Improve SPA Method Research and its Application in Water Environment Assessment

摘要：

The previous SPA study only focused on three ranks evaluation. This paper presents an improved SPA method utilizing original relation degree malleability of SPA, and extends it to five ranks evaluation. The improved method can depict identity, discrepancy and contrary in more detail. In addition, this study combines fuzzy comprehensive evaluation method to evaluate six main factors of surface water environment, instead of the discussion of j+,i-,j+,j-coefficient. It not only obtains evaluation result but also obtains probability distribution of each rank. In this paper, we apply the method to the comprehensive assessment of Tuojiang water quality and compare the results with Gray relation method, gray cluster method. We conclude that the improved SPA method can represent the true state of the object with extensive engineering application value.

关键词： improved SPA five ranks evaluation Gray relation gray cluster gray cluster relation assessment

作者: ZHENG Zhihong WEI Minghua QIU Lin

作者单位: North China University of Water Conservancy And Electric Power,Zhengzhou 450011,China

会议类型: 国际会议

会议名称: 2010 IEEE信息与自动化国际会议(ICIA 2010)

会议地点: 哈尔滨

会议语种:英文

页码: 1-5

在线出版日期: 2010-06-20（万方平台首次上网日期，不代表论文的发表时间）