4. The large vocabulary continuous speech recognition method according to claim 2 ; wherein, in said step (c), said computer multiplies said likelihood of said inter-distribution distance of said pair of phonemes by a frame count of said phonemes so as to normalize said likelihood.
2. The large vocabulary continuous speech recognition method according to claim 1 ; wherein said method further comprises the step of: (e) performing by said computer steps (b) and (c) with respect to speech data for training and learning pair-by-pair weightings for said phoneme pairs so as to correctly perform hypothesis ranking by said summation value of said speech recognition score and said structure score.