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Any progress on this?

I was able to implement a basic example. (**MN=MatrixNormal, MVN=MultivariateNormal**) **Sampling:** I've used the fact that if `X` is a `(n x p)` matrix with `x_(ij) ~ N(0,1)` and `Y=loc...

@quattro You are right. The current implementation is a simple translation of the `MatrixNormal` used in tensorflow probability. While an efficient version is straight forward without batching I'm struggling with...

My impression is, that the error occurs if one supplies a validation set to the train method of a multivariate model, f.e. GPVAR. Running the code below produces the error,...

> We have a `DayOfWeek` class defined in `ibis/expr/types/temporal.py`. I missed that. > Alternatively, I can take a crack at this one, if you want to handle iso_year() I'll give...

Is it possible that there are currently no tests for `.day_of_week.index` and `.day_of_week.full_name`? Was looking to place a test nearby but couldn't find them.

@cpcloud The `sqlite` tests pass locally. The `exasol` as well as the `impala` containers do not work thus I cannot test this locally. I have to investigate this a little...

@cpcloud I'm not sure where the corresponding tests should be placed? - Inside `ibis/tests/expr/test_timestampy.py` - as new parametrization of `test_extract_fields` - as a new test function, f.e. `test_iso_year` - Inside...

I don't quiet understand all of the internals, but from what I understand this should add the `isoweekday` functionality. However I do not understand what `day_of_week` in (`ibis/expr/types/temporal.py`) currently is...

@cpcloud Sorry for the late answer. It works for my use case, thanks.