基于灰色关联分析的lasso法在区域用水经济效益系数中的应用

Research on Regional Water Use Economic Efficiency Coefficient Based on Gray Relational Analysis and Lasso Method

水资源优化配置是解决区域水资源短缺问题的一个有效途径,而进行水资源优化配置的基础是确定区域用水经济效益系数。运用灰色系统理论中的关联分析方法,分析区域历史用水状况,对影响用水经济效益的各因素进行分析,初步区分出主要影响因子。结合Lasso套索回归,挖掘各影响因子与经济总产值之间的关系,利用该方法重点探讨了周口市工业用水和农业用水经济效益系数的求解。结果表明,该方法能较为准确的求出研究区域的用水经济效益系数,为水资源优化配置中经济效益系数的确定提供了一种更加精确和量化的方法。

Optimal allocation of water is an effective way to resolve the issue of regional water shortages, while identification of economic efficiency coefficient of the regional water is the basis. Use relational a-nalysis method in gray system theory, the various factors that affect water use economic benefits based on regional historical water use data is analyzed, and the main impact factors is distinguished. Mining the relationship between impact factors and total economic output combined with Lasso regression, and the method is used to solve water use economic efficiency coefficient of industrial water and agricultural water in Zhoukou City. The result shows that the method can calculate the water use economic efficiency coeffi-cient of study area more accurately, and provide a more accurate and quantitative methods in fixing the e-conomic efficiency coefficient of optimal allocation of water.