Research on Port Efficiency Measurement Based on Three-stage Cascade Data Envelopment Analysis Control Strategy

In order to measure the port efficiency, this paper uses the three stage DEA cascade control strategy to measure the relative efficiency of the port.First, the original input-output value is used to measure the port efficiency. Secondly, the stochastic frontier analysis method is used to analyze the influence of random error and environmental variables on the input difference value. Then, the result of the model is used to adjust the input value. Finally, the adjusted input value is used to re-measure the relative efficiency. Compared with the traditional DEA, this method eliminates the influence of random errors in the DEA model and the different external environmental factors in the port so as to make the measured efficiency more objective and accurate. At the same time, it analyzes the influence of different environmental factors on the port efficiency impact.