Secondly, it permits the identification of unseen morphemes.
let M = {m i |1 ≤ i ≤ |M|} be a set of morphemes, let f i be the frequency with which morpheme m i occurs in a M-corpus of morpheme sequences, let v i = (m i , f i ) for 1 ≤ i ≤ n, and let f i, j denote the number of morpheme sequences in the corpus in which morpheme m i is followed by morpheme m j .