LM missing back-off probabilities
udani at streamsage.com
Wed May 25 12:18:49 PDT 2005
I am sorry if this problem has already been addressed before on this forum.
I am trying to generate a small LM for using in Sphinx Speech
Recognition system but the back-off probabilities for every ngram
occuring at the end of sentence(s) are missing.
For example -
<s> we cannot afford to fight the war against poverty with accounting
For a trigram LM, it doesn't generate back-off probabilities for
"tricks" (unigram) and "accounting tricks " (bigram). This tends to
happen for all the sentences in the test set taken from the corpus.
I am trying to use the "ngram-count" script with witten bell discounting
applied to all n-grams in a trigram model.
If any of you have faced a similar problem before, I would appreciate it
if you could help me out here.
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