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#!/bin/bash
# Copyright (c) Facebook, Inc. and its affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
echo 'Cloning Moses github repository (for tokenization scripts)...'
git clone https://github.com/moses-smt/mosesdecoder.git
SCRIPTS=mosesdecoder/scripts
TOKENIZER=$SCRIPTS/tokenizer/tokenizer.perl
CLEAN=$SCRIPTS/training/clean-corpus-n.perl
REM_NON_PRINT_CHAR=$SCRIPTS/tokenizer/remove-non-printing-char.perl
URLS=(
"http://statmt.org/wmt13/training-parallel-europarl-v7.tgz"
"http://statmt.org/wmt13/training-parallel-commoncrawl.tgz"
"http://data.statmt.org/wmt18/translation-task/training-parallel-nc-v13.tgz"
"http://data.statmt.org/wmt18/translation-task/rapid2016.tgz"
"http://data.statmt.org/wmt17/translation-task/dev.tgz"
"http://statmt.org/wmt14/test-full.tgz"
)
CORPORA=(
"training/europarl-v7.de-en"
"commoncrawl.de-en"
"training-parallel-nc-v13/news-commentary-v13.de-en"
"rapid2016.de-en"
)
if [ ! -d "$SCRIPTS" ]; then
echo "Please set SCRIPTS variable correctly to point to Moses scripts."
exit
fi
src=en
tgt=de
lang=en-de
prep=wmt18_en_de
tmp=$prep/tmp
orig=orig
dev=dev/newstest2012
codes=32000
bpe=bpe.32k
mkdir -p $orig $tmp $prep $bpe
cd $orig
for ((i=0;i<${#URLS[@]};++i)); do
url=${URLS[i]}
file=$(basename $url)
if [ -f $file ]; then
echo "$file already exists, skipping download"
else
wget "$url"
if [ -f $file ]; then
echo "$url successfully downloaded."
else
echo "$url not successfully downloaded."
exit 1
fi
if [ ${file: -4} == ".tgz" ]; then
tar zxvf $file
elif [ ${file: -4} == ".tar" ]; then
tar xvf $file
fi
fi
done
cd ..
echo "pre-processing train data..."
for l in $src $tgt; do
rm -rf $tmp/train.tags.$lang.tok.$l
for f in "${CORPORA[@]}"; do
cat $orig/$f.$l | \
perl $REM_NON_PRINT_CHAR | \
perl $TOKENIZER -threads 8 -l $l -no-escape >> $tmp/train.tags.$lang.tok.$l
done
done
echo "pre-processing test data..."
for l in $src $tgt; do
if [ "$l" == "$src" ]; then
t="src"
else
t="ref"
fi
grep '<seg id' $orig/test-full/newstest2014-deen-$t.$l.sgm | \
sed -e 's/<seg id="[0-9]*">\s*//g' | \
sed -e 's/\s*<\/seg>\s*//g' | \
sed -e "s/\’/\'/g" | \
perl $TOKENIZER -threads 8 -l $l -no-escape > $tmp/test.$l
echo ""
done
# apply length filtering before BPE
perl $CLEAN -ratio 1.5 $tmp/train.tags.$lang.tok $src $tgt $tmp/train 1 100
# use newstest2012 for valid
echo "pre-processing valid data..."
for l in $src $tgt; do
rm -rf $tmp/valid.$l
cat $orig/$dev.$l | \
perl $REM_NON_PRINT_CHAR | \
perl $TOKENIZER -threads 8 -l $l -no-escape >> $tmp/valid.$l
done
mkdir output
mv $tmp/{train,valid,test}.{$src,$tgt} output
#BPE
git clone https://github.com/glample/fastBPE.git
pushd fastBPE
g++ -std=c++11 -pthread -O3 fastBPE/main.cc -IfastBPE -o fast
popd
fastBPE/fast learnbpe $codes output/train.$src output/train.$tgt > $bpe/codes
for split in {train,valid,test}; do for lang in {en,de}; do fastBPE/fast applybpe $bpe/$split.$lang output/$split.$lang $bpe/codes; done; done
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