These methods select a finite number of EWMAs of in-sample data with different parameters, then make linear combination of these EWMAs under different criteria, as the predictor of crude oil price.

该方法使用拟合期内的样本，在不同准则下选取有限个不同参数的EWMA的线性组合，作为油价的预报因子。

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However, all that stuff was a whopping predictor of higher sales, profits and stock price two years out.

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Gold is a great predictor of our economic health because as the most constant, objective measure of value in existence, its price is the single best measure of the value of the most important price in the world: the U.S. dollar.

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