HMM Formalism B K K S,K,∏,A,B ∏={π} are the initial state probabilities A=(ai are the state transition probabilities B=bik are the observation state probabilities7 HMM Formalism • {S, K, P, A, B} • P = {pi} are the initial state probabilities • A = {aij} are the state transition probabilities • B = {bik} are the observation state probabilities A B A A A B B S S S K K K S K S K