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提出了大坝实测性态综合评价中一种新的权重确定方法———改进的层次分析法与主成份分析法相结合赋权方法以及相应的算法步骤，并通过计算实例验证了这种新方法的可行性和合理性．
A new method of weight determination in comprehensive evaluation of dam actual performance is proposed. The improved AHP and principal component analysis combined with weighting method and corresponding algorithm steps demonstrate the new method The feasibility and rationality.