make_bn_feats.sh
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#!/bin/bash
# Copyright 2012 Karel Vesely, Daniel Povey
# Apache 2.0
# To be run from .. (one directory up from here)
# see ../run.sh for example
# Begin configuration section.
nj=4
cmd=run.pl
remove_last_layers=4 # remove N last components from the nnet
# End configuration section.
echo "$0 $@" # Print the command line for logging
if [ -f path.sh ]; then . ./path.sh; fi
. parse_options.sh || exit 1;
if [ $# != 5 ]; then
echo "usage: $0 [options] <tgt-data-dir> <src-data-dir> <nnet-dir> <log-dir> <abs-path-to-bn-feat-dir>";
echo "options: "
echo " --trim-transforms <N> # number of NNet Components to remove from the end"
echo " --nj <nj> # number of parallel jobs"
echo " --cmd (utils/run.pl|utils/queue.pl <queue opts>) # how to run jobs."
exit 1;
fi
if [ -f path.sh ]; then . path.sh; fi
data=$1
srcdata=$2
nndir=$3
logdir=$4
bnfeadir=$5
######## CONFIGURATION
# copy the dataset metadata from srcdata.
mkdir -p $data || exit 1;
cp $srcdata/* $data 2>/dev/null; rm $data/feats.scp $data/cmvn.scp;
# make $bnfeadir an absolute pathname.
bnfeadir=`perl -e '($dir,$pwd)= @ARGV; if($dir!~m:^/:) { $dir = "$pwd/$dir"; } print $dir; ' $bnfeadir ${PWD}`
# use "name" as part of name of the archive.
name=`basename $data`
mkdir -p $bnfeadir || exit 1;
mkdir -p $data || exit 1;
mkdir -p $logdir || exit 1;
srcscp=$srcdata/feats.scp
scp=$data/feats.scp
required="$srcscp $nndir/final.nnet"
for f in $required; do
if [ ! -f $f ]; then
echo "$0: no such file $f"
exit 1;
fi
done
if [ ! -d $srcdata/split$nj -o $srcdata/split$nj -ot $srcdata/feats.scp ]; then
utils/split_data.sh $srcdata $nj
fi
#cut the MLP
nnet=$bnfeadir/feature_extractor.nnet
copy-nnet --remove-last-layers=$remove_last_layers --binary=false $nndir/final.nnet $nnet 2>$logdir/feature_extractor.log
#get the feature transform
feature_transform=$nndir/final.feature_transform
echo "Creating bn-feats into $data"
###
### Prepare feature pipeline
feats="ark,s,cs:copy-feats scp:$srcdata/split$nj/JOB/feats.scp ark:- |"
# Optionally add cmvn
if [ -f $nndir/norm_vars ]; then
norm_vars=$(cat $nndir/norm_vars 2>/dev/null)
feats="$feats apply-cmvn --norm-vars=$norm_vars --utt2spk=ark:$srcdata/utt2spk scp:$srcdata/cmvn.scp ark:- ark:- |"
fi
# Optionally add deltas
if [ -f $nndir/delta_order ]; then
delta_order=$(cat $nndir/delta_order)
feats="$feats add-deltas --delta-order=$delta_order ark:- ark:- |"
fi
###
###
#Run the forward pass
$cmd JOB=1:$nj $logdir/make_bnfeats.JOB.log \
nnet-forward --feature-transform=$feature_transform $nnet "$feats" \
ark,scp:$bnfeadir/raw_bnfea_$name.JOB.ark,$bnfeadir/raw_bnfea_$name.JOB.scp \
|| exit 1;
N0=$(cat $srcdata/feats.scp | wc -l)
N1=$(cat $bnfeadir/raw_bnfea_$name.*.scp | wc -l)
if [[ "$N0" != "$N1" ]]; then
echo "Error producing bnfea features for $name:"
echo "Original feats : $N0 Bottleneck feats : $N1"
exit 1;
fi
# concatenate the .scp files together.
for ((n=1; n<=nj; n++)); do
cat $bnfeadir/raw_bnfea_$name.$n.scp >> $data/feats.scp
done
echo "Succeeded creating MLP-BN features for $name ($data)"