15. A non-transitory computer readable storage medium comprising instructions that, when executed by a processor, cause the processor to: determine a frequency of occurrence of an utterance type; compare the frequency of occurrence of the utterance type to a threshold; and tune a speech recognition device to recognize the utterance type with improved accuracy when the frequency of occurrence of the utterance type exceeds the threshold.
15. A non-transitory computer readable storage medium comprising instructions that, when executed by a processor, cause the processor to: determine a frequency of occurrence of an utterance type; compare the frequency of occurrence of the utterance type to a threshold; and tune a speech recognition device to recognize the utterance type with improved accuracy when the frequency of occurrence of the utterance type exceeds the threshold. 16. The non-transitory computer readable storage medium of claim 15 , further comprising instructions that, when executed by the processor, cause the processor to determine an accuracy of recognition of the utterance type.