WAT 2017

The 4th Workshop on Asian Translation

Baseline Systems

Data preparation for the JK and KJ subtask

Setup

MOSES_SCRIPT=${path}/mosesdecoder-RELEASE-2.1.1/scripts


cd corpus.org/


Extracting sentences

for name in train dev test; do
  perl -ne 'chomp; @a=split/ \|\|\| /; print $a[3], "\n";' < ${name}.txt > ${name}.ko.txt
  perl -ne 'chomp; @a=split/ \|\|\| /; print $a[4], "\n";' < ${name}.txt > ${name}.ja.txt
done


For Phrase-based and Hierarchical Phrase-based SMT

mkdir corpus.tok
cd corpus.tok


Tokenizing sentences in Korean

for file in train dev test; do
  cat ../corpus.org/${file}.ko.txt | \
    mecab -O wakati | \
    perl -Mencoding=utf8 -pe 's/ $//; tr/\|[]/｜［］/; ' \
    > ${file}.ko
done

notice: mecab for Korean is different from mecab for Japanese.

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


Cleaning training data for translation models

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

cd ..


JST (Japan Science and Technology Agency)
NICT (National Institute of Information and Communications Technology)
Kyoto University
Last Modified: 2017-07-21