Ngoc-Quang LuongBenjamin LecouteuxLaurent BesacierLIG System for WMT13 QE Task: Investigating the Usefulness of Features in Word Confidence Estimation for MT.386-3912013WMT@ACLhttps://aclanthology.org/W13-2248/conf/wmt/2013db/conf/wmt/wmt2013.html#LuongLB13