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