1. a Department of Embedded Systems and Robotics, Technical University Munich, 85748 Garching, Germany
2. b Istituto Dalle Molle di Studi sull'Intelligenza Artificiale (IDSIA), 6928 Manno-Lugano, Switzerland;, Email: tino@idsia.ch
3. c Istituto Dalle Molle di Studi sull'Intelligenza Artificiale (IDSIA), 6928 Manno-Lugano, Switzerland
4. d Department of Embedded Systems and Robotics, Technical University Munich, 85748 Garching, Germany
5. e Department of Embedded Systems and Robotics, Technical University Munich, 85748 Garching, Germany
6. f Department of Embedded Systems and Robotics, Technical University Munich, 85748 Garching, Germany, Istituto Dalle Molle di Studi sull'Intelligenza Artificiale (IDSIA), 6928 Manno-Lugano, Switzerland