Progress in Artificial Intelligence 19th EPIA Conference on Artificial Intelligence, EPIA 2019, Vila Real, Portugal, September 3-6, 2019, Proceedings, Part II - Moura Oliveira, Paulo; Moura Oliveira, Paulo; Novais, Paulo; Novais, Paulo; Reis, Luís Paulo; Reis, Luís Paulo (Springer International Publishing : Imprint: Springer, 2019)