Grey Relational Analysis Model Based on Weighted Entropy and its Application

In order to improve the low evaluation precision that the grey relational analysis method has been, the entropy theory was integrated to establish a new model. According to the variation of the index value, the coefficients of weight in the model are obtained from the utility value reflecting the information entropy of data, the subjective influence could be avoided. The new model was applied to the comprehensive evaluation on exploration potentiality of regional rainwater resource. The analysis result showed that introducing the entropy theory into grey relational analysis method is scientific, the proposed model is reasonable and the evaluation precision of the grey relational analysis method has been improved.