def compile_filter(self, token):
        return FilterExpression(token, self)
We can analytically integrate out z (latent states)
dataset/ETHPy150Open dcramer/django-compositepks/django/template/__init__.py/Parser.compile_filter--crossover with--dataset/ETHPy150Open HIPS/pgmult/pgmult/lds.py/_MultinomialLDSBase._info_form_heldout_log_likelihood