As long as a labeled training set is available, string kernels can reach state-of-the-art results in various languages including English (Ionescu et al., 2014; Giménez-Pérez et al., 2017; Cozma et al., 2018) , Arabic (Ionescu, 2015; Ionescu et al., 2016;<cite> Ionescu and Butnaru, 2017</cite>; , Chinese and Norwegian (Ionescu et al., 2016) .