A Evaluation Method Based on Regret Theory and Grey Entropy TOPSIS
Considering valuator's risk attitudes and cognitive limitation,a new evaluation method based on regret theory and grey entropy TOPSIS is proposed.Firstly,original evaluation values are converted into standard values by using an improved normalization method.Then,based on regret theory the utility values are calculated by using the power function,and the perceived value matrix is constructed by using the regret-rejoice function based on optimum values.A new method is constructed to get the index weight vector based on interval grey entropy.So that the comprehensive perceived values are calculated,a ranking is determined.Finally,an illustrate example shows that the feasibility and effectiveness of the proposed method.
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