This algorithm may be regarded as a variant of exterior point penalty function methods.

该算法可看作是外点罚函数法的一个变体。

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The iterative methods ate mostly based on the statistics and the penalty function, including the penalty function methods and the minimum variance methods etc.

而迭代法主要是以数理统计和罚函数法为基础来建立修正方程，阐述了罚函数法和最小方差法等修正方法。

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Penalty function method is one of the effective methods to solve this kind of problems.

罚函数法是解决这一问题的有效的方法之一。

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