PCA Week 1: Mean/Covariance of a data set and effect of a linear transformation

[yonikremer]

(shapes (2, 1), (3,) mismatch)
x: array([[0.666667],
[1.333333]])
y: array([0.5, 1.5, 1. ])

def mean(X):
D, N = X.shape
mean = np.zeros((D,1))
mean = np.mean(X, axis=1, keepdims=True)
return mean