Note also that E(k) represents a word sequence with inserted empty symbols; the sequence with all inserted symbols removed is known as the compact form of E(k).
all the cell sequences S(i, i ) can be classified, with respect to the length of corresponding n-grams, into a set of parameters where each element (with a particular value of n) has the probability The probability of the transition from i to i is: the transition probability of incremental IHMM is a weighted sum of probabilities of 'ngram jumping', defined as conventional IHMM distortion probabilities.