1. A method for processing a received set of speech data, wherein the received set of speech data comprises an utterance, the method comprising: executing a process to generate a plurality of confidence scores, wherein each of the plurality of confidence scores is associated with one of a plurality of candidate utterances; determining a plurality of difference values, each of the plurality of difference values comprising a difference between two of the plurality of confidence scores; and comparing the plurality of difference values to determine at least one disparity.