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Hi,<div><br></div><div>I have a language model interpolated from a class LM and a word LM. If I compute the PPL on my dev set with ngram -classes .. it gives a reasonable PPL, if I expand the interpolated LM and compute the PPL (without the -classes parameter) I get a very high PPL. Can anyone tell me why?</div><div><br></div><div>Best,</div><div>Fabian</div> </body>
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