5. The method of claim 4 , further comprising: selecting k utterances that have smallest confidence scores from the set of candidates and transcribing the k utterances into a first additional transcribed set.
5. The method of claim 4 , further comprising: selecting k utterances that have smallest confidence scores from the set of candidates and transcribing the k utterances into a first additional transcribed set. 7. The method of claim 5 , wherein selecting k utterances further comprises leaving out utterances with confidence scores indicating that the utterances were correctly recognized.