which type of hmm is used to describe the drowsiness state? what is the correct way to infer a state of drowsiness with a hmm model? how to infer a state of drowsiness with a factorial hmm? how to use forward backward hmm model why is the road type a factorial hmm hmm definition of the drowsiness chain hmm what is the name of the two states which chain of state is considered as a factorial hmm? what are the hidden states of an hmm model what type of inference is used for an hmm equation exact inference in factorial which statement is appropriate for driving when in hmm? which type of hmm can be used for precise inference what is the correct way to infer drowsiness what is the drowsiness chain of the hmm? which type of road type is used to conduct exact inference? which statement represents inference how to do exact inference which chain of state is the driving state of the hmm what is exact inference