Use jaxopt for Laplace approximation#53
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Use the jaxopt implementation of LBFGS for the Laplace approximation in NAPSU-MQ in an attempt to improve performance.
Leaving this as a draft, as this did not result in a significant performance improvement. As the pytorch version of NAPSU-MQ computes the Laplace approximation much faster, further investigation into what causes the performance issue with jax seems to be needed.