Publication
Morpheme- and POS-based IBM1 scores and language model scores for translation quality estimation
Maja Popovic
In: Proceedings of the Seventh Workshop on Statistical Machine Translation. Workshop on Statistical Machine Translation (WMT-12), 7th, located at NAACL, June 7-8, Montreal, QC, Canada, Pages 133-137, Association for Computational Linguistics, 6/2012.
Abstract
We present a method we used for the quality estimation shared
task of WMT 2012 involving IBM1 and language model scores
calculated on morphemes and POS tags.
The IBM1 scores calculated on morphemes and POS-4grams of the
source sentence and obtained translation output are shown
to be competitive with the classic evaluation metrics for ranking
of translation systems.
Since these scores do not require any reference translations, they
can be used as features for the quality estimation
task presenting a connection between the source
language and the obtained target language.
In addition, target language model scores of morphemes and POS tags are
investigated as estimates for the obtained target language quality.