Hidden states are the unknowns we try to detect or predict. The Hidden states have a relationship amongst themselves called the transition probabilities. Observations are the evidence variables that we have a priori. Observations and states have a relationship between them called the emission probabilities.Continue Reading

The Viterbi algorithm (using the maximum likelihood  decoding (MLD) algorithm) is a dynamic programming algorithm for finding the most likely sequence of hidden states – called the Viterbi path in hidden Markov models (HMM)Continue Reading