Provided by: sphinxbase-utils_0.8+5prealpha+1-3_amd64 bug


       sphinx_lm_eval - Evaluate perplexity of a transcription


       sphinx_lm_eval [ options ]...


       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

              file listing a set of language models

              of language model in -lmctlfn to use for all utterances

              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

              definition file for classes in LM

       -text  string to evaluate

       -uw    Unigram probability weight (interpolated with uniform distribution)

              Print details of perplexity calculation

       -wip   Word insertion probability


       David Huggins-Daines <>


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

                                            2008-05-12                          SPHINX_LM_EVAL(1)