Then, formulate a general weight function based on weight arithmetic, weight geometric and weighted harmonic mean, which provides math mean for the study.

然后根据算术均值方法、几何均值方法和调和均值方法，构造一个综合权重均值函数，为本文的研究提供了数学方法。

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Selling the stock had become something of a heresy by early 2012 and those who were not at least equal-weight the name were condemned, by basic arithmetic, to under-performance purgatory.

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