MKBINGRAM(1)                                         MKBINGRAM(1)



NAME
       mkbingram - make binary N-gram from two arpa LMs

SYNOPSIS
       mkbingram 2gram.arpa rev3gram.arpa bingram

DESCRIPTION
       mkbingram  makes a binary N-gram file for Julius from word
       2-gram and reverse word 3-gram LMs in ARPA  standard  for-
       mat.  Using the binary file, the initial startup of Julius
       becomes much faster.

       Note that the word 2-gram and reverse word  3-gram  should
       be  trained in the same corpus, same parameters (i.e. cut-
       off thresholds) and have the same vocabulary.

       mkbingram can read gzipped ARPA file.

       mkbingram that comes with Julius version 3.5 and later can
       generate  more size-optimized binary N-gram by using 24bit
       index instead of 32bit and 2-gram  backoff  data  compres-
       sion.  The byte order was also changed from 3.5 to use the
       system's native order by default.

       Although the old binary N-gram can  be  directly  read  by
       Julius, (in that case Julius performs on-line conversion),
       you can also update your  binary  N-gram  using  mkbingram
       using -d option.

       Please note that binary N-gram file converted by mkbingram
       of version 3.5 and later cannot be read  by  Julius/Julian
       3.4.2 and earlier.

OPTIONS
       2gram.arpa
              input word 2-gram file in ARPA standard format.

       rev3gram.arpa
              input  reverse word 3-gram in ARPA standard format.

       -d old_bingram
              input binary N-gram file (for conversion  from  old
              format).

       bingram
              output binary N-gram file.

EXAMPLE
       Convert ARPA files to binary format:

           % mkbingram ARPA_2gram ARPA_rev_3gram outfile

       Convert old binary N-gram file to new format:

           % mkbingram -d old_bingram new_bingram


USAGE
       You  can  specify  the  generated  binary  N-gram  file on
       Julius/Julian using option "-d".

SEE ALSO
       julius(1)

VERSION
       This version is provided as part of Julius-3.5.1.

COPYRIGHT
       Copyright (c) 1991-2006 Kawahara Lab., Kyoto University
       Copyright (c) 2000-2005 Shikano Lab.,  Nara  Institute  of
       Science and Technology
       Copyright (c) 2005-2006 Julius project team, Nagoya Insti-
       tute of Technology

AUTHORS
       LEE Akinobu (Nagoya Institute of Technology, Japan)
       contact: julius@kuis.kyoto-u.ac.jp

LICENSE
       Same as Julius.



                              LOCAL                  MKBINGRAM(1)
