Much research has been done on subword-level and subword-aware 1 neural language modeling when subwords are characters (Ling et al., 2015b;Kim et al., 2016;Verwimp et al., 2017) or morphemes (Botha and Blunsom, 2014;Qiu et al., 2014;Cotterell and Schütze, 2015).
not much work has been done on syllable-level or syllable-aware NLM.