Global<cite> (Noraset et al., 2017)</cite> , (2) Local (Ni and Wang, 2017) with CNN, (3) I-Attention (Gadetsky et al., 2018) , and our proposed model, (4) LOGCaD. The Global model is our reimplementation of the best model (S + G + CH) in <cite>Noraset et al. (2017)</cite> .