排灌机械工程学报
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排灌机械工程学报  2018, Vol. 36 Issue (11): 1147-1151    DOI: 10.3969/j.issn.1674-8530.18.1154
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改进共原点灰色聚类评价方法在灌区节水改造中的应用
苟万里1, 杨路华1,2*, 许欣然1, 邸志刚1
1.天津农学院水利工程学院, 天津 300384; 2.天津市农业水利技术工程中心, 天津 300384
Improved grey clustering evaluation method and its application in water-saving recontruction of irrigation district
GOU Wanli1, YANG Luhua1,2*, XU Xinran1, DI Zhigang1
1.College of Water Conservancy Engineering, Tianjin Agricultural University, Tianjin 300384, China; 2.Tianjin Agricultural Water Conservancy Technology Engineering Center, Tianjin 300384, China
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摘要 针对灰色聚类评价共原点聚类函数存在的灰类交叉及隶属度等速率变化不合理现象,对原函数的灰类区间以及隶属度走势进行修改,提出了中心化抛物线型函数的改进共原点聚类函数,用此函数对评价体系指标进行模糊化处理,使得评价更具合理性与真实性.采用主客观最优组合权重计算综合聚类系数,解决了权重与阈值信息重叠的矛盾.将改进后的中心化抛物线型函数与共原点灰色聚类函数进行对比分析,分析函数变化趋势以及最终的综合聚类系数,改进的中心化抛物线型函数比共原点灰色聚类更加符合实际情况.最后选取潘庄大型灌区,进行续建配套与节水改造工程建设后评价,评价结果与实际情况较为吻合.
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苟万里
杨路华
*
许欣然
邸志刚
关键词中心化抛物线型函数   共原点灰色聚类函数   组合权重   隶属度   聚类系数     
Abstract: Grey clustering evaluation method is extensively used in evaluation of multi-factor things.In this paper, an improved commonorigin clustering function with centralized parabolic function was proposed to remove the disadvantages such as grey class overlap and membership grade even change in the function.This function can be used to make evaluation indices fuzzification, and allow the evaluated results to be more reasonable and truthful.The subjective and objective optimal combination weight method was adopted to calculate the comprehensive clustering coefficient and the overlap contradiction between weight and thresholdinformation was resolved.The improved centralized parabolic function was compared with the original commonorigin grey clustering function, andthe variation trend and the final comprehensive clustering coefficient of the function were analyzed. The results show that the improved centralized parabolic function is more suitable to the actual condition than the commonorigin gray clustering does.Finally, taking Panzhuang Irrigation District as an example, an evaluation onthe water-saving reconstructionproject in the district was carried out, and the evaluated results were well consistent with the actual situation.
Key wordscentral parabolic clustering function   common origin grey clustering   combinatorial weight   degree of membership   clustering coefficient   
收稿日期: 2018-05-08;
基金资助:

水利部海河水利委员会资助项目(TNHP2018001)

引用本文:   
苟万里,杨路华,*等. 改进共原点灰色聚类评价方法在灌区节水改造中的应用[J]. 排灌机械工程学报, 2018, 36(11): 1147-1151.
GOU Wan-Li-,YANG Lu-Hua-,* et al. Improved grey clustering evaluation method and its application in water-saving recontruction of irrigation district[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(11): 1147-1151.
 
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