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