Shortage Degree Assessment of Water Resources in Sichuan Province Based on Improved Grey Target Model

The traditional grey target model was improved by weights.In order to improve the reliability of the index weight,entropy method combined with AHP method was used to determine the index weight,then an improved grey target model based on comprehensive weights was proposed.Its efficiency was verified by evaluating shortage degree of water resources of Sichuan province.Compared with traditional grey target model,the proposed method is scientific,rational,simple for concept and calculation,and can display progressive relation clearly.