1. A method comprising: identifying, via a processor, segments of a dialog system based on a timing of probable user responses; exclusively activating a weighted grammar for a specific segment of dialog in the dialog system during the specific segment, to yield an activated weighted grammar; and recognizing user speech received during the specific segment of the dialog using the activated weighted grammar.
1. A method comprising: identifying, via a processor, segments of a dialog system based on a timing of probable user responses; exclusively activating a weighted grammar for a specific segment of dialog in the dialog system during the specific segment, to yield an activated weighted grammar; and recognizing user speech received during the specific segment of the dialog using the activated weighted grammar. 2. The method of claim 1 , further comprising assigning a probability to the weighted grammar based on historical user responses and activating the weighted grammar based on the probability.