format_lms.sh
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#!/bin/bash
#
# Copyright 2014 Nickolay V. Shmyrev
# Apache 2.0
if [ -f path.sh ]; then . ./path.sh; fi
small_arpa_lm=data/local/local_lm/data/arpa/4gram_small.arpa.gz
big_arpa_lm=data/local/local_lm/data/arpa/4gram_big.arpa.gz
lang=lang_nosp
. utils/parse_options.sh
for f in $small_arpa_lm $big_arpa_lm data/${lang}/words.txt; do
[ ! -f $f ] && echo "$0: expected file $f to exist" && exit 1
done
set -e
if [ -f data/${lang}/G.fst ] && [ data/${lang}/G.fst -nt $small_arpa_lm ]; then
echo "$0: not regenerating data/${lang}/G.fst as it already exists and "
echo ".. is newer than the source LM."
else
arpa2fst --disambig-symbol=#0 --read-symbol-table=data/${lang}/words.txt \
"gunzip -c $small_arpa_lm|" data/${lang}/G.fst
echo "$0: Checking how stochastic G is (the first of these numbers should be small):"
fstisstochastic data/${lang}/G.fst || true
utils/validate_lang.pl --skip-determinization-check data/${lang}
fi
if [ -f data/${lang}_rescore/G.carpa ] && [ data/${lang}_rescore/G.carpa -nt $big_arpa_lm ] && \
[ data/${lang}_rescore/G.carpa -nt data/${lang}/words.txt ]; then
echo "$0: not regenerating data/${lang}_rescore/ as it seems to already by up to date."
else
utils/build_const_arpa_lm.sh $big_arpa_lm data/${lang} data/${lang}_rescore || exit 1;
fi
exit 0;