Flexible Query Answering Systems 2015 Proceedings of the 11th International Conference FQAS 2015, Cracow, Poland, October 26-28, 2015 - Andreasen, Troels; Christiansen, Henning 1955-; Kacprzyk, Janusz 1947-; Larsen, Henrik; Pasi, Gabriella 1961-; Pivert, Olivier; De Tré, Guy; Vila, María Amparo; Yazıcı, Adnan 1962-; Zadrożny, Sławomir (Advances in Intelligent Systems and Computing, 2016)