中文说明：灰色模型GM(1，1)原始数列经过光滑优化
English Description：
The original sequence of grey model GM (1,1) is smoothed and optimized
The original sequence of grey model GM (1,1) is smoothed and optimized
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中文说明：灰色模型GM(1，1)原始数列经过光滑优化
English Description：
The original sequence of grey model GM (1,1) is smoothed and optimized