This section aims to compare the tree kernel-based method in<cite> Plank and Moschitti (2013)</cite> and the feature-based method in Nguyen and Grishman (2014) for DA of RE on the same settings (i.e, same dataset partition, the same pre-processing Table 3 : Tree kernel-based in<cite> Plank and Moschitti (2013)</cite> vs feature-based in Nguyen and Grishman (2014) .