WAT 2015

The 2nd Workshop on Asian Translation

Baseline Systems

Data preparation for the JC and CJ subtasks

Setup

MOSES_SCRIPT=${path}/mosesdecoder-RELEASE-2.1.1/scripts
SCRIPT_DIR=${path}/script.converter.distribution


cd corpus.org/


Extracting sentences

for name in dev test train; do
  perl -ne 'chomp; @a=split/ \|\|\| /; print $a[1], "\n";' < ${name}.txt > ${name}.ja.txt
  perl -ne 'chomp; @a=split/ \|\|\| /; print $a[2], "\n";' < ${name}.txt > ${name}.zh.txt
done

cd ..


For Phrase-based and Hierarchical Phrase-based SMT

mkdir corpus.tok
cd corpus.tok


Tokenizing sentences in Japanese

for file in train dev test; do
  cat ../corpus.org/${file}.ja.txt | \
    perl -Mencoding=utf8 -pe 's/　/ /g;' | \
    juman -b | \
    perl -ne 'chomp; if($_ eq "EOS"){print join(" ",@b),"\n"; @b=();} else {@a=split/ /; push @b, $a[0];}' | \
    perl -pe 's/^ +//; s/ +$//; s/ +/ /g;' | \
    perl -Mencoding=utf8 -pe 'tr/\|[]/｜［］/; ' \
    > ${file}.ja
done


Tokenizing sentences in Chinese

for name in dev test train; do
  ${path}/stanford-segmenter-2014-01-04/segment.sh ctb ../corpus.org/${name}.zh.txt UTF-8 0 | \
    perl -Mencoding=utf8 -pe 'tr/\|[]/｜［］/; ' \
    > ${name}.zh
done


Cleaning training data for translation models

perl ${MOSES_SCRIPT}/training/clean-corpus-n.perl train ja zh train-clean 1 40

cd ..


For String-to-Tree and Tree-to-String SMT

mkdir corpus.tree
cd corpus.tree


Parsing Chinese sentences

for file in train-clean dev test; do
  perl ${MOSES_SCRIPT}/training/wrappers/parse-de-berkeley.perl \
    -binarize \
    -ja ${path}/BerkeleyParser-1.7/BerkeleyParser-1.7.jar \
    -gr ${path}/BerkeleyParser-1.7/chn_sm5.gr \
    < ../corpus.tok/${file}.zh > ${file}.parsed.zh
done


Cleaning training data for translation models

ln -s ../corpus.tok/train-clean.ja train-clean.parsed.ja
perl ${MOSES_SCRIPT}/training/clean-corpus-n.perl \
  train-clean.parsed ja zh \
  train-clean 1 40 \
  --ignore-xml

ln -s dev.parsed.zh dev.zh
ln -s test.parsed.zh test.zh

cd ..

JST (Japan Science and Technology Agency)
NICT (National Institute of Information and Communications Technology)
Kyoto University
Last Modified: 2015-02-26