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. (Communications in Computer and Information Science,, 2017)