14. The system of claim 12 , wherein the decoding component, alignment component, segment selecting component, and training component are operative to iterate over N parts of M duration of the corpus of training data.
15. The system of claim 14 , wherein on a first iteration, the decoding component uses the incremental language model from the original transcription corresponding to the first part; and the training component is operative to build L incremental language models for subsequent iterations, where M/L is less than or equal to one, and where each of the L incremental language models uses a portion of M/L duration of the original transcription corresponding to a subsequent part.