sphinx_lm_eval(1) 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 <[email protected]>

COPYRIGHT

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