Contributions by: Suvrit Sra, Sebastian Nowozin, Stephen J. Wright, Francis Bach, Rodolphe Jenatton, Julien Mairal, Guillaume Obozinski, Martin Andersen, Joachim Dahl, Zhang Liu, Lieven Vandenberghe, Dimitri Bertsekas, Anatoli Juditsky, Arkadi Nemirovski, Vojtech Franc, Sören Sonnenburg, Thomáš Werner, David Sontag, Amir Globerson, Tommi Jaakkola, Ryota Tomioka, Taiji Suzuki, Masashi Sugiyama, Elad Hazan, Mark Schmidt, Dongmin Kim, Jacek Gondzio, Léon Bottou, Olivier Bousquet, Constantine Caramanis, Shie Mannor, Huan Xu, Nicolas Le Roux, Yoshua Bengio, Andrew Fitzgibbon, Jean-Yves Audibert, Sébsatien Bubeck, Rémi Munos, Katya Scheinberg, Shiqian Ma, Vijay Krishnamurthy, Selin Damla Ahipasaoglu, Alexandre d'Aspremont