而后结合频率灵敏度，基于渐进结构优化方法，建立了一套优化准则和算法。

Then, a set of optimization criteria and algorithms are set up based on frequency sensitivity and evolutionary structural optimization methods.

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该方法以最小二乘法作为模型参数优选的准则，并采用逐次渐进网格寻优法优选模型参数。

This method minimizes the squared flood simulation difference and employs the successive grid search technique to find the optimal model parameter values.

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该方法以最小二乘法作为模型参数优选的准则，并采用逐次渐进网格寻优法优选模型参数。

This method minimizes the squared flood simulation difference and employs the successive grid search technique to find the optimal model parameter values.

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