PyMCInterface
PyMCInterface#
- class liesel.experimental.pymc.PyMCInterface(model, additional_vars=[])[source]#
Bases:
object
An implementation of
ModelInterface
to be used with a PyMC model.The initial position can be extraced with
get_initial_state()
. The model state is represented as aPosition
.- Parameters
By default, only non-observed random variables are available via extract_position. This includes transformed variables but not the untransformed variable. Also, Deterministic is not available. To make them trackable for
Engine
these variables must be mentioned in the constructor.Methods
extract_position
(position_keys, model_state)Extracts a sub-position specified by position_keys from model_state.
Returns the model's initial.
log_prob
(model_state)Computes the unnormalized log-probability given the model state.
update_state
(position, model_state)Updates the model state with position returning the new model state.