灰色關聯分析法步驟（python代碼實現）

import pandas as pd import numpy as np # x = pd.DataFrame([[2000,0.732,0.836,0.628,0.743], [2001,0.758,0.883,0.688,0.787], [2002,0.859,0.914,0.781,0.929],[2003,1.0125,1.0440,1.0237,0.9847],[2004,1.235

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