Portfolio Weighting Approach of Intensive Land Use Evaluation Based on Entropy and Deviation Function: A Case Study of YuHuan Economic Development Zones

This document compares the main methods on evaluation index weighting, and takes YuHuan economic development zones as a real case to prove difference in index weighting methods, and puts forward that the subjective weighting approach is introduced in the entropy concept on the basis of comprehensive analysis, and establishes a combination weighting method based on deviation function. It makes the overall minimum deviation in the values what identified by the combination weighting method and the others. The empirical results show: (1) Different weighting method have significant differences in outcome. (2) The outcome from combination weighting method is closely approximate to the subjective weighting method, indicating that the results meet the realities of Yuhuan land intensive use; (3) The weighting results directly affect the accuracy and validity of the evaluation results of land intensive use in development zones. Introducing entropy and deviation function, can effectively avoid some of the deficiencies that subjective weighting method is not accuracy and objective weighting method is unrealistic, and evaluation empowerment of the intensive land use become more scientific.