How can the backoff weights a language model be positive?
A. Here’s how we can explain positive numbers in place of backoff weights in the LM: The numbers you see in the ARPA format LM (use din CMU) are not probabilities. They are log base 10 numbers, so you have log10(probs) and log10(backoffweights). Backoff weights are NOT probabilities. Consider a 4 word vocab A B C D.
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