Recent Advances in Reinforcement Learning 8th European Workshop, EWRL 2008, Villeneuve d’Ascq, France, June 30-July 3, 2008, Revised and Selected Papers - Girgin, Sertan; Loth, Manuel; Munos, Rémi; Preux, Philippe; Ryabko, Daniil (Springer Berlin Heidelberg, 2008)