Research On Investment Efficiency Evaluation Of Urban Infrastructure System Based On Three Stage DEA-malmquist Model

In the process of rapid development of China's New-type Urbanization,urban infrastructure system,as a material carrier,plays an important supporting role in the construction of New-type Urbanization.At the same time,in the process of investment of urban infrastructure system,the low efficiency results in waste of resources,unbalanced regional development and unreasonable allocation.As a scientific tool to test and improve the investment efficiency of urban infrastructure system,the investment efficiency evaluation model of urban infrastructure system has attracted the attention of scholars.In this thesis,the investment efficiency of urban infrastructure system is evaluated by using three-stage DEA-Malmquist model on the basis of identifying the interaction of urban infrastructure system.First of all,By using information feedback theory and literature research method,the interaction relationship of urban infrastructure system is identified.Secondly,The input-output index and the external influencing factor index were preliminarily identified by literature research and statistical analysis,and the evaluation index system of the investment efficiency of urban infrastructure system is obtained by optimizing the initial index through the interaction of urban infrastructure system and the expert interview method.Thirdly,a three-stage DEA-Malmquist model was built in this thesis.Finally,the feasibility of this model is verified through empirical analysis of the investment efficiency of urban infrastructure system in 31 provinces and cities in China from 2010 to 2017.In this thesis,an operational model for evaluating the investment efficiency of urban infrastructure system is established,and this model provides an idea for decision makers to make investment decisions of urban infrastructure system under the premise of limited resources,which contributes to optimize the investment efficiency of urban infrastructure system and improve the overall service level of urban infrastructure system in the process of China's New-type Urbanization.