中文说明：
改进的等维新息灰色模型，还有残差数列检验，后验差检验，模型精确好用。
English Description：
The improved equal dimension innovation grey model, as well as residual series test and posterior error test, makes the model accurate and easy to use
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中文说明：
改进的等维新息灰色模型，还有残差数列检验，后验差检验，模型精确好用。
English Description：
The improved equal dimension innovation grey model, as well as residual series test and posterior error test, makes the model accurate and easy to use