About -bayes option in "ngram" command

[Xiaolong Li]

Hi,
    I met a problem in using "-bayes" option of "ngram" command when I want to interpolate two LM models (using posterier mixture weights). The below command doesn't work with an error message as "write() method not implemented".

ngram -lm LM1 -mix-lm LM2 -bayes 0 -write-lm MIX_LM 

but it works when I use a priori mixture weights (without -bayes option)

    Could you help me? Thanks a lot.

Hans Li
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