The derivative of dispersed function doesn't exist, so that, how to deal with the derivative is the key to set up grey model.
由于离散函数的导数不存在，因此，如何处理导数信号，是建立灰色模型的关键。
We deal with original data sets and set up a grey model with grey prediction method.
提出用灰色预测的方法，对基金的走势进行预测。
The dynamic swing index transformation method of firsthand data sequence and GPPM (1) grey model is studed and set up.
研究提出了原始数据序列的动态摆动指数变换方法和GPPM(1)灰色模型。
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