Similar trends are found when conducting such experiments to Text Simplification (TS) ( §4).
evaluation in monolingual translation (Xu et al., 2015;Mani, 2009) and in particular in GeC (Tetreault and Chodorow, 2008;Madnani et al., 2011;Felice and Briscoe, 2015;Bryant and Ng, 2015; has gained notoriety for its difficulty, due in part to the heterogeneity and size of the space of valid corrections (Chodorow et al., 2012;Dreyer and Marcu, 2012).