Beyond Databases, Architectures and Structures. Towards Efficient Solutions for Data Analysis and Knowledge Representation 13th International Conference, BDAS 2017, Ustroń, Poland, May 30 - June 2, 2017, Proceedings - Kozielski, Stanisław; Mrozek, Dariusz; Kasprowski, Paweł; Małysiak-Mrozek, Bożena; Kostrzewa, Daniel (Springer International Publishing : Imprint: Springer, 2017)