投资方案多属性决策组合评价法研究

给出了一种投资方案多准则经济评价的新方法，即组合评价方法。这种方法根据多目标决策理论，建立了组合评价法的数学模型，通过针多种评价方法进行组合。然后，结合实例提出了两种主客观赋权相结合的评价方法：一是目标优化评价法。这种方法通过构造评价问题的最优化模型与拉格朗日函数，得出评价指标的客观权重，再利用权重合成公式，将主客观权重加以合成。另一种是熵权系数法。这种方法依据熵的概念及性质，将主客观评价信息进行量化综合，进而建立基于熵的多目标评价模型。最后，本文利用组合评价法的数学模型，将上述两种方法进行了组合。通过对评价实例的对比分析表明，组合评价法的评价结果更加符合实际。

Study of combination evaluation method of investing scheme decision with multiple attribution

Combination evaluation method, a new multi index economic evaluating method for investment, is presented. Based on the multi object decision theory, a mathematical model of combination evaluation is set up to combine many kinds of evaluation method. Two kinds of evaluation methods with the subjective and objective weight are showed, optimize evaluation method and entropy method. For the former, by constructing a optimization model and Lagrange function, the objective weight of evaluation index is got, and by the weight combination formula, the subjective and objective weight are combined. For the latter, based on the concept of entropy, quantitating the objective and subjective evaluating information, the multi object evaluation model is set up. By the founded mathematical model, the two kinds of methods above are combined. The constrast of the exaluation example shows that the evaluating result got by the combination evaluation method has a better agreement with the reality.