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SPHINX_LM_EVAL(1)	    General Commands Manual	     SPHINX_LM_EVAL(1)

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 distribu-
	      tion)

       -verbose
	      Print details of perplexity calculation

       -wip   Word insertion probability

AUTHOR
       David Huggins-Daines <dhdaines@gmail.com>

COPYRIGHT
       Copyright (C) 2007-2008 Carnegie	Mellon University.  See	the file COPY-
       ING included with this package for more information.

				  2008-05-12		     SPHINX_LM_EVAL(1)

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<https://man.freebsd.org/cgi/man.cgi?query=sphinx_lm_eval&sektion=1&manpath=FreeBSD+Ports+15.0>

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