5. The speech processing method of claim 1 , wherein said performing comprises: calculating an intersection of the modified word lattice and a finite state machine including a plurality of salient grammar fragments; and determining a classification type for the input utterance based on the calculated intersection.
5. The speech processing method of claim 1 , wherein said performing comprises: calculating an intersection of the modified word lattice and a finite state machine including a plurality of salient grammar fragments; and determining a classification type for the input utterance based on the calculated intersection. 6. The speech processing method of claim 5 , further comprising preprocessing the modified word lattice, wherein said calculating comprises calculating an intersection of the preprocessed modified word lattice and the finite state machine.