LIG System for WMT13 QE Task: Investigating the Usefulness of Features in Word Confidence Estimation for MT Ngoc-Quang Luong author Benjamin Lecouteux author Laurent Besacier author 2013-08 text Proceedings of the Eighth Workshop on Statistical Machine Translation Ondrej Bojar editor Christian Buck editor Chris Callison-Burch editor Barry Haddow editor Philipp Koehn editor Christof Monz editor Matt Post editor Herve Saint-Amand editor Radu Soricut editor Lucia Specia editor Association for Computational Linguistics Sofia, Bulgaria conference publication luong-etal-2013-lig https://aclanthology.org/W13-2248/ 2013-08 386 391