Learning and Intelligent Optimization 9th International Conference, LION 9, Lille, France, January 12-15, 2015. Revised Selected Papers - Dhaenens, Clarisse.; Dhaenens, Clarisse.; Jourdan, Laetitia.; Jourdan, Laetitia.; Marmion, Marie-Eléonore.; Marmion, Marie-Eléonore. (Springer International Publishing : Imprint: Springer, 2015)