For instance, after a system prompt, if the floor remains free for a certain amount of time, the system attempts to re-establish the communication with the user, as follows: The opposite also happens when the system is to slow to respond to the user: While all the transitions above were described as deterministic, the actual state of the model is not fully observable.
while the system knows whether its claiming the floor or not, it can only believe with some degree of uncertainty that the user does so.