Transactions on Computational Collective Intelligence XXXI - Nguyen, Ngoc Thanh; Nguyen, Ngoc Thanh; Kowalczyk, Richard; Kowalczyk, Richard; Mercik, Jacek; Mercik, Jacek; Motylska-Kuźma, Anna; Motylska-Kuźma, Anna (Springer Berlin Heidelberg : Imprint: Springer, 2018)