These tasks are devoted to the normalization of (1)<cite> (Limsopatham and Collier, 2016)</cite> 73.39 ----CNN<cite> (Limsopatham and Collier, 2016)</cite> 81.41 ----RNN<cite> (Limsopatham and Collier, 2016)</cite> 79.98 ----Attentional Char-CNN (Niu et al., 2018) 84.65 ----Hierarchical Char-CNN (Han et al., 2017) - Table 2 : The performance of the proposed models and the state-of-the-art methods in terms of accuracy.