Artificial Intelligence and Natural Language 8th Conference, AINL 2019, Tartu, Estonia, November 20-22, 2019, Proceedings - Ustalov, Dmitry; Ustalov, Dmitry; Filchenkov, Andrey; Filchenkov, Andrey; Pivovarova, Lidia; Pivovarova, Lidia (Springer International Publishing : Imprint: Springer, 2019)