Related to our approach is the literature on novel methods for the evaluation of machine translation systems, especially through the WMT evaluation task (Callison-Burch et al., 2011;Machácek and Bojar, 2014;Stanojevic et al., 2015).
(Albrecht and Hwa, 2007;Gupta et al., 2015) have proposed to evaluate machine translation systems using Regression and Tree-LSTMs respectively.