1SPHINX_LM_EVAL(1)           General Commands Manual          SPHINX_LM_EVAL(1)
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NAME

6       sphinx_lm_eval - Evaluate perplexity of a transcription
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SYNOPSIS

9       sphinx_lm_eval [ options ]...
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DESCRIPTION

12       This  program  evaluates  the  perplexity of a text file according to a
13       given language model.  The text file is assumed  to  be  in  transcript
14       format, i.e. one utterance per line, delimited by <s> and </s>.
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16       -help  Shows the usage of the tool
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18       -lm    model file
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20       -lmctlfn
21              file listing a set of language models
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23       -lmname
24              of language model in -lmctlfn to use for all utterances
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26       -logbase
27              Base in which all log-likelihoods calculated
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29       -lsn   file to evaluate
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31       -lw    Language model weight
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33       -mmap  Use memory-mapped I/O for reading binary LM files
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35       -probdef
36              definition file for classes in LM
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38       -text  string to evaluate
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40       -uw    Unigram  probability weight (interpolated with uniform distribu‐
41              tion)
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43       -verbose
44              Print details of perplexity calculation
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46       -wip   Word insertion probability
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AUTHOR

49       David Huggins-Daines <dhuggins@cs.cmu.edu>
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52       Copyright © 2007-2008 Carnegie Mellon University.  See the file COPYING
53       included with this package for more information.
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57                                  2008-05-12                 SPHINX_LM_EVAL(1)
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