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19 Mar
2012
19 Mar
'12
9:20 p.m.
Your matrix X is not symmetric.
This is not the problem. (Even if that were the problem, it wouldn't cause a hang -- docs say "no error will be reported but results will be wrong".) In fact, the same hang happens on the installation which originally had this problem if you replace X with X = np.dot(X, X.T) so that the matrix is symmetric.