Data processing in project supply chain vendor selection based on improved entropy weight - grey correlation - TOPSIS

On the basis of the establishment of evaluation index system, an improved entropy weight - grey correlation - TOPSIS model is put forward to select project supply chain vendor, and process the related data. The each index weight is obtained from subjective weighting method and objective entropy method. The positive and negative distance between each evaluation object and ideal solution is calculated, and the grey correlation grade between each evaluation object and ideal solution is obtained. Then the relative closeness of each evaluation object can be gained that we can select the best vendor according to it.