sphinx_lm_eval(1)

Evaluate perplexity of a transcription

Section 1 sphinxbase-utils bookworm source

Description

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@cs.cmu.edu>