8. A speech recognition system, comprising: a processor; a speech module to assign an utterance type to a received utterance; a targeting engine comprising instructions that, when executed by the processor, cause the processor to compare a frequency of occurrence of the utterance type to a threshold; and a tuning engine to tune the speech module to improve recognition of the utterance type when the frequency of occurrence of the utterance type exceeds the threshold.
8. A speech recognition system, comprising: a processor; a speech module to assign an utterance type to a received utterance; a targeting engine comprising instructions that, when executed by the processor, cause the processor to compare a frequency of occurrence of the utterance type to a threshold; and a tuning engine to tune the speech module to improve recognition of the utterance type when the frequency of occurrence of the utterance type exceeds the threshold. 9. The speech recognition system of claim 8 , wherein tuning the speech module comprises feeding a collection of utterances of the utterance type to the speech module.