Machine Learning and Knowledge Discovery in Databases European Conference, ECML PKDD 2015, Porto, Portugal, September 7-11, 2015, Proceedings, Part II - Appice, Annalisa; Rodrigues, Pedro Pereira; Santos Costa, Vítor; Gama, João; Jorge, Alípio; Soares, Carlos (Springer International Publishing : Imprint: Springer, 2015)