def RBFfeatures(X, Centroids, bandwidth):
d = norm(Centroids[0], bandwidth).pdf(X)
d = d.reshape(-1, 1)
for c in xrange(Centroids.shape[0] - 1):
d = np.concatenate((d, (norm(Centroids[c + 1], bandwidth).pdf(X)).reshape(-1, 1)), 1)
return d
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