简要分析当前指标赋权法的优缺点，给出一种利用理想最优方案计算指标权重的方法。

After analyzing the shortcoming of existing methods on determining the index weight, a method is presented on the basis of ideal optimization scheme.

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该方法以优化理论为依据，以待评方案距理想最优方案的加权距离的平方为优化目标，建立了新的数学模型，并给出了精确解。

Using optimization theory a mathematics model which optimizes the distance square of project being evaluated and ideal optimization scheme is established.

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该模型不仅避免了寻求虚拟理想方案和负理想方案的困难，而且它把整个评价方案看作一个整体来寻求最优决策方案，还具有易于在计算机上实现的特点。

The model gets rid of the difficulty to seek dummy ideal scheme and negative ideal scheme, and seek the optimum decision making scheme in the whole system.

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