Research On Performance Evaluation Of Chinese Rare Earth Listed Companies Based On DEA Model

This paper takes the research on the business performance evaluation of Listed Companies in China's rare earth industry as the main line,uses the research methods of combining theory and empirical,qualitative and quantitative,constructs DEA model to evaluate the business performance of Listed Companies in China's rare earth industry on the basis of enterprise performance evaluation theory and research results at home and abroad,and puts forward relevant suggestions according to the evaluation results Good advice.The main research contents and conclusions are as follows:First of all,this paper systematically reviews the research progress on the influencing factors and evaluation models of performance evaluation at home and abroad.Based on the theory of scale economy,input-output theory and performance evaluation theory,this paper puts forward the research methods and ideas based on Data Envelopment Analysis(DEA),which enriches the theory and methods of performance evaluation of rare earth listed companies in China.Secondly,the qualitative feasibility analysis of DEA evaluation method is carried out,and the basic principle and basic model of DEA model are introduced.And select the data envelopment analysis(DEA)based on the input of the basic model BCC model to build the performance evaluation model of China's rare earth listed companies,select 20 rare earth listed companies' business data from 2015 to 2019 as samples to calculate and analyze the operation efficiency of China's rare earth industry.Finally,taking 20 rare earth listed companies from 2015 to 2019 as samples,this paper calculates the comprehensive efficiency,pure technical efficiency and scale efficiency of rare earth listed companies,and makes a comparative analysis of the rare earth listed companies at the front and back end of the rare earth industry chain.The empirical results show that: from 2015 to 2019,the comprehensive performance of 20 rare earth listed companies is greater than 0.8,and the proportion of enterprises can reach more than 90%,indicating that the operating efficiency of rare earth listed companies in China is at a high level.From the perspective of the total average comprehensive efficiency from 2015 to 2019,the average comprehensive efficiency of the rear end of the rare earth industry chain is higher than that of the front end of the rare earth industry chain,which is a good signal and conducive to the balanced development of China's rare earth industry and the upgrading of industrial structure.The results show that: during 2015-2019,the average comprehensive efficiency of rare earth listed companies is 0.948,0.942,0.93,0.941,0.919 respectively,which indicates that the rare earth industry is at a high level during this period,and the comprehensive efficiency fluctuates little and is relatively stable.