NumPy--corrcoef()

皮爾遜積矩相關係數,又稱「相關係數」，取值範圍爲[-1,1],r=0,沒有相關性。函數 a = np.array([1,2,3]) b = np.array([3,4,5]) def correlation(x, y): # std_x = (x-x.mean())/(x.std(ddof=0)) # std_y = (y-y.mean)/(y.std(ddof=0))

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