While most of these approaches are based on deep learning (Cheng et al., 2018; Conneau et al., 2017; <cite>Hill et al., 2016</cite>; Iyyer et al., 2015; Kim, 2014; Kiros et al., 2015; Le and Mikolov, 2014; Zhao et al., 2015; Zhou et al., 2018) , there have been some approaches that are inspired by computer vision research, namely by the bag-of-visual-words and by Fisher Vectors (Clinchant and Perronnin, 2013) .