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Based on subjective or objective, and the combination of subjective and objective principles to determine the weight limitations, in order to improve the overall uation of scientific, research and presents a balanced integration of subjective and objective factors empowerment methods. Subjective weight and objective weight of the method proposed by weight as a standard policy-makers to integrate the weight and the weight of the objective and subjective bias as the objective, the optimal combination of model-based empowerment moment estimation theory, the optimal solution by solving the model to determine the index The optimal combination weights.