[WIP ] Leaky Numerator for chain models #1478
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… primes should be added on-the-fly so that the alpha, beta values remain correct. (2) leaky transitions were not considered in gamma compuations!
…ption to py scripts.
…ion-denfst still might be a problem
…at the outgoing transition probs sum to 1.0
…eak/unleak eta and trans scalings + new options
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This is only for review/discussion.
Currently, only the objf values (chain and xent) are improved. No WER improvement except a small one on AMI/sdm1 (0.4).