The solution of inverse problem usually requires nonlinear optimization of an objective function describing the difference between measured and simulated data.

反问题的求解常常需要转化为非线性优化问题，其目标函数定义为观测数据与模型数据之间的残差平方和。

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The solution of inverse problem usually requires nonlinear optimization of an objective function describing the difference between measured and simulated data.

反问题的求解常常需要转化为非线性优化问题，其目标函数定义为观测数据与模型数据之间的残差平方和。

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