这是最小二乘法，比较实用，目前俺手中最小二乘法库中的一个，可以用于代码，如果你需要，可以下载，直接搬过去用。-This is the least square method, more practical, I present the hands of the least square method, a library, can be used to code, if you want, you can download directly moved by the past.
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