Use fast_logdet to compute penalty #18
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This was referenced Jan 9, 2023
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Trying to fix #17.
The optimization now uses
scipy.utils.extmath.fast_logdetinstead ofnp.log(np.linalg.det()).In case of a negative determinant, the penalty is being set to 0.
Is that correct @jzluo? How should negative determinants be handled?