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egs/wsj/s5/steps/online/decode.sh
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#!/bin/bash
# Copyright 2014 Johns Hopkins University (Author: Daniel Povey)
# Apache 2.0
# Begin configuration section.
stage=0
nj=4
cmd=run.pl
max_active=7000
beam=13.0
lattice_beam=6.0
acwt=0.083333 # note: only really affects adaptation and pruning (scoring is on
# lattices).
per_utt=false
do_endpointing=false
do_speex_compressing=false
scoring_opts=
skip_scoring=false
# End configuration section.
echo "$0 $@" # Print the command line for logging
[ -f ./path.sh ] && . ./path.sh; # source the path.
. parse_options.sh || exit 1;
if [ $# != 3 ]; then
echo "Usage: $0 [options] <graph-dir> <data-dir> <decode-dir>"
echo "... where <decode-dir> is assumed to be a sub-directory of the directory"
echo " where the models are, as prepared by steps/online/prepare_online_decoding.sh"
echo "e.g.: $0 exp/tri3b/graph data/test exp/tri3b_online/decode/"
echo ""
echo ""
echo "main options (for others, see top of script file)"
echo " --config <config-file> # config containing options"
echo " --nj <nj> # number of parallel jobs"
echo " --cmd (utils/run.pl|utils/queue.pl <queue opts>) # how to run jobs."
echo " --acwt <float> # acoustic scale used for lattice generation "
echo " --per-utt <true|false> # If true, decode per utterance without"
echo " # carrying forward adaptation info from previous"
echo " # utterances of each speaker."
echo " --scoring-opts <string> # options to local/score.sh"
exit 1;
fi
graphdir=$1
data=$2
dir=$3
srcdir=`dirname $dir`; # The model directory is one level up from decoding directory.
sdata=$data/split$nj;
mkdir -p $dir/log
[[ -d $sdata && $data/feats.scp -ot $sdata ]] || split_data.sh $data $nj || exit 1;
echo $nj > $dir/num_jobs
for f in $srcdir/conf/online_decoding.conf $graphdir/HCLG.fst $graphdir/words.txt $data/wav.scp; do
if [ ! -f $f ]; then
echo "$0: no such file $f"
exit 1;
fi
done
if ! $per_utt; then
spk2utt_rspecifier="ark:$sdata/JOB/spk2utt"
else
mkdir -p $dir/per_utt
for j in $(seq $nj); do
awk '{print $1, $1}' <$sdata/$j/utt2spk >$dir/per_utt/utt2spk.$j || exit 1;
done
spk2utt_rspecifier="ark:$dir/per_utt/utt2spk.JOB"
fi
if $do_endpointing; then
if $do_speex_compressing; then
wav_rspecifier="ark:compress-uncompress-speex scp:$sdata/JOB/wav.scp ark:-|extend-wav-with-silence ark:- ark:-|"
else
wav_rspecifier="ark:extend-wav-with-silence scp:$sdata/JOB/wav.scp ark:-|"
fi
else
if $do_speex_compressing; then
wav_rspecifier="ark:compress-uncompress-speex scp:$sdata/JOB/wav.scp ark:-|"
else
wav_rspecifier=scp:$sdata/JOB/wav.scp
fi
fi
if [ $stage -le 0 ]; then
$cmd JOB=1:$nj $dir/log/decode.JOB.log \
online2-wav-gmm-latgen-faster --do-endpointing=$do_endpointing \
--config=$srcdir/conf/online_decoding.conf \
--max-active=$max_active --beam=$beam --lattice-beam=$lattice_beam \
--acoustic-scale=$acwt --word-symbol-table=$graphdir/words.txt \
$graphdir/HCLG.fst $spk2utt_rspecifier "$wav_rspecifier" \
"ark:|gzip -c > $dir/lat.JOB.gz" || exit 1;
fi
if ! $skip_scoring ; then
[ ! -x local/score.sh ] && \
echo "Not scoring because local/score.sh does not exist or not executable." && exit 1;
local/score.sh --cmd "$cmd" $scoring_opts $data $graphdir $dir
fi
exit 0;
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