Closed kori73 closed 3 years ago
@kori73 Thanks for your interest. The development team has made the decision not to continue with the TFP-based version of PyMC. We will instead be updating the Theano backend to make it compile with JAX and other engines. If you are interested in contributing to PyMC, I'd suggest directing your attention to the PyMC3 repo, as it will continue to the main supported version of PyMC.
I would like to work on adding a few time-series distributions starting with LocalLinearTrend and Seasonal.
Looking at the discussions for the AR pull request, I see that you are not currently happy with the way the
initial_state_prior
for tfp is obtained. Currently, we are passing a MultivariateNormalDiag withinitial_state
mean and std close to 0.I have checked how the
initial_state_prior
is used in the base class (LinearGaussianStateSpaceModel
) and it seems that thecovariance
method needs to be implemented.Do you have any suggestions on how to proceed?