3. The computer-based method of claim 1 wherein organizing the speech corpuses into clusters comprises: (a) creating a first speech recognition engine based on a first one of the speech corpuses; (b) applying the first speech recognition engine to produce a recognized version of a second one of the speech corpuses; and (c) calculating a first edit distance between the recognized version of the second one of the speech corpuses and the transcription of the second one of the speech corpuses.
3. The computer-based method of claim 1 wherein organizing the speech corpuses into clusters comprises: (a) creating a first speech recognition engine based on a first one of the speech corpuses; (b) applying the first speech recognition engine to produce a recognized version of a second one of the speech corpuses; and (c) calculating a first edit distance between the recognized version of the second one of the speech corpuses and the transcription of the second one of the speech corpuses. 4. The computer-based method of claim 3 wherein organizing the speech corpuses into clusters comprises: (d) organizing the second speech corpus into the same cluster as the first speech corpus if the first edit distance is less than a particular value.