format_lms.sh
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#!/bin/bash
# Copyright 2014 Vassil Panayotov
# Apache 2.0
# Prepares the test time language model(G) transducers
# (adapted from wsj/s5/local/wsj_format_data.sh)
# Modified by Lucas Jo 2017 (Altas Guide)
. ./path.sh || exit 1;
# begin configuration section
src_dir=data/lang
# end configuration section
. utils/parse_options.sh || exit 1;
set -e
if [ $# -ne 1 ]; then
echo "Usage: $0 <lm-dir>"
echo "e.g.: $0 /export/a15/vpanayotov/data/lm"
echo ", where:"
echo " <lm-dir> is the directory in which the language model is stored/downloaded"
echo "Options:"
echo " --src-dir <dir> # source lang directory, default data/lang"
exit 1
fi
lm_dir=$1
if [ ! -d $lm_dir ]; then
echo "$0: expected source LM directory $lm_dir to exist"
exit 1;
fi
if [ ! -f $src_dir/words.txt ]; then
echo "$0: expected $src_dir/words.txt to exist."
exit 1;
fi
tmpdir=data/local/lm_tmp.$$
trap "rm -r $tmpdir" EXIT
mkdir -p $tmpdir
#lm_sets="tgsmall tgmed"
lm_sets="tgsmall"
for lm_suffix in ${lm_sets}; do
# tglarge is prepared by a separate command, called from run.sh; we don't
# want to compile G.fst for tglarge, as it takes a while.
test=${src_dir}_test_${lm_suffix}
mkdir -p $test
cp -r ${src_dir}/* $test
gunzip -c $lm_dir/zeroth.lm.${lm_suffix}.arpa.gz | \
arpa2fst --disambig-symbol=#0 \
--read-symbol-table=$test/words.txt - $test/G.fst
utils/validate_lang.pl --skip-determinization-check $test || exit 1;
done
echo "Succeeded in formatting data."
exit 0