Study on the Evaluation of Construction Company Efficiency Based on GRA and DEA

relational analysis. Abstract. Based on 30 listed construction companies input-output data for the study, establish index of construction input and output in construction companies, first use gray correlation analysis to screen indicators, and then use data envelopment analysis method to evaluate 30 efficiency of construction companies. The results showed that the comprehensive efficiency and technical efficiency are high,and scale efficiency is the key to restrict its production efficiency. 1