Before revision:  The canonical Smatch metric (Cai and Knight, 2013) aligns variables from one graph to another and compares the matching triples. The recently released SemBleu metric (Song and Gildea, 2019) is based on the machine-translation metric Bleu (Papineni et al., 2002) , increasing computational efficiency by ablating a variable-alignment step and aiming at capturing more global graph properties.
After revision:  The canonical Smatch metric (Cai and Knight, 2013) aligns the variables of two graphs and assesses triple matches. The recent SemBleu metric (Song and Gildea, 2019) is based on the machine-translation metric Bleu (Papineni et al., 2002) , increasing computational efficiency by ablating a variable-alignment step and aiming at capturing more global graph properties.