最后，一??个双向迭代算法利用用于最小化成本的双二次函数的迭代优化的两个权重。

Finally, a bi-iterative algorithm for minimizing the bi-quadratic cost function is utilized to optimize iteratively the two weights.

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此函数需要迭代的次数与 $indentation 类变量值相同，对于每次迭代，它将 $indentationValue 类变量添加到 $xml，并将后者返回。

This function iterates as many times as the value of the $indentation class variable, and for each iteration it adds the $indentationValue class variable to $xml, and returns it.

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此函数在每个月的数据中迭代。

This function iterates over each month of data.

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