Method of determining weights of decision makers and attributes for group decision making with interval grey numbers

The problem of seeking weights of decision-makers and attributes is studied in multi-attribute group decision making with interval grey numbers.For avoiding conflict between subjective weights and objective ones computed from attributes' values given by decision makers,the comprehensive weights are calculated by combining subjective weights and objective ones,where objective weights of attributes are obtained by using the maximum entropy model under the constrains of grey relation degree between the optimal project and every one.While,based on the degree of group consensus and information distribution,the weights of decision-makers are obtained by the maximum entropy thought and grey relation degree between every decision maker's comprehensive evaluations and average group evaluations.Finally,an aggregation approach of group decision making with interval grey numbers is presented.The numerical example is proved to verify the proposed method is more reasonable than other methods.