Inference in an hmm Probability Estimation: Compute the probability of a given observation sequence Decoding: Given an observation sequence compute the most likely hidden state sequence Parameter Estimation: Given an observation sequence find a model that most closely fits the observation8 Inference in an HMM • Probability Estimation: Compute the probability of a given observation sequence • Decoding: Given an observation sequence, compute the most likely hidden state sequence • Parameter Estimation: Given an observation sequence, find a model that most closely fits the observation