然后，深入的研究了灰色理论预测方法和神经网络预测方法，并使用这些方法对现有数据集进行对比预测。
Then, the grey prediction methods and neural network prediction methods are researched, and these methods are used to conduct comparison of prediction about existing data sets in the paper.
上世纪90年代，许多经济学家开始将混沌理论视为一种提供预测模型的方法。
In the 1990s, many economists began to look at chaos theory as a way of providing models for forecasting.
事实证明这个方法很有效，甚至比目前理论预测的还要好。
It turns out that the method works even better than what the theory was predicting at the time.
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