rescore-acoustic

这是一款很好用的工具包

#!/bin/sh
#
# rescore-acoustic --
#       Replace acoustic Nbest scores with a weighted combination of
#       old and new acoustic scores
#
# $Header: /home/srilm/devel/utils/src/RCS/rescore-acoustic,v 1.6 2003/01/11 01:25:44 stolcke Exp $
#

if [ $# -lt 5 ]; then
        echo "usage: $0 old-nbest-dir old-ac-weight new-score-dir1 new-ac-weight1 new-score-dir2 new-ac-weight2 ... new-nbest-dir [max-nbest]" >&2
        echo "    or $0 old-file-list old-ac-weight new-score-dir1 new-ac-weight1 new-score-dir2 new-ac-weight2 ... new-nbest-dir [max-nbest]" >&2
        exit 1
fi

old_nbest=${1}
old_acw=${2}
shift; shift

new_scores=
new_acw=
while [ $# -ge 3 ]
do
	new_scores="$new_scores $1"
	new_acw="$new_acw $2"
	shift; shift
done
new_nbest=${1}
max_nbest=${2-0}

set -e

join1=/tmp/join1_$$
join2=/tmp/join2_$$
trap "rm -f $join1 $join2" 0 1 2 15

echo "generating sentids ..." >&2
if [ -d $old_nbest ]; then
	find $old_nbest/. -follow -type f -print
else
	cat $old_nbest 
fi | \
sed -e 's,.*,& &,' -e 's,[^ ]*/,,' -e 's,\.gz , ,' -e 's,\.score , ,' | \
sort +0 -1 > $join1

echo "`wc -l < $join1` utterances" >&2

for d in $new_scores
do
	echo "joining $d ..." >&2
	find $d/. -follow -type f -print | \
	sed -e 's,.*,& &,' -e 's,[^ ]*/,,' -e 's,\.gz , ,' |\
	sort +0 -1 | \
	/usr/local/gnu/bin/join $join1 - > $join2
	mv $join2 $join1
done
echo "`wc -l < $join1` utterances after joining" >&2

mkdir -p $new_nbest

cat $join1 | \
while read sentid scorefiles
do
	echo $sentid >&2
	combine-acoustic-scores -v "weights=$old_acw $new_acw" \
		-v max_nbest=$max_nbest $scorefiles | \
		gzip > $new_nbest/$sentid.score.gz 
done