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SPHINX_LM_EVAL

NAME

sphinx_lm_eval − Evaluate perplexity of a transcription

SYNOPSIS

sphinx_lm_eval [ options ]...

DESCRIPTION

This program evaluates the perplexity of a text file according to a given language model. The text file is assumed to be in transcript format, i.e. one utterance per line, delimited by <s> and </s>.

−help

Shows the usage of the tool

−lm

model file

−lmctlfn

file listing a set of language models

−lmname

of language model in −lmctlfn to use for all utterances

−logbase

Base in which all log-likelihoods calculated

−lsn

file to evaluate

−lw

Language model weight

−mmap

Use memory-mapped I/O for reading binary LM files

−probdef

definition file for classes in LM

−text

string to evaluate

−uw

Unigram probability weight (interpolated with uniform distribution)

−verbose

Print details of perplexity calculation

−wip

Word insertion probability

AUTHOR

David Huggins-Daines <dhuggins AT cs DOT cmu DOT edu>

COPYRIGHT

Copyright © 2007-2008 Carnegie Mellon University. See the file COPYING included with this package for more information.

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