Efficiency evaluation research of a regional water system based on a game cross-efficiency model

To solve the problem of regional water system evaluation, this paper proposes a system efficiency evaluation method based on the game cross-efficiency model and conducts an empirical analysis. First, autopoiesis is introduced as the theoretical basis. The characteristics of the authigenic system are combined with a regional water system, and the connotation and characteristics of the regional water system are defined. Second, based on the competitive relationship between regional water systems, the existing game crossover efficiency model is improved. A crossover efficiency model of other games is proposed to evaluate the efficiency of regional water systems. Then, the Pearl River Delta urban agglomeration is selected as the research object. The effects of four systematic evaluation methods based on the DEA method are compared horizontally to find the optimal system efficiency evaluation method. Finally, the characteristics of the regional water system in the Pearl River Delta are systematically analysed through the evaluation results, and the present situation of the regional water system is fully explained.

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