1. Department of Cognitive Robotics, TU Delft, Delft, The Netherlands
2. Robotics Institute, Carnegie Mellon University, Pittsburgh, PA, USA
3. Department of EECS, UC Berkeley, Berkeley, CA, USA
4. Department of Aerospace Engineering and Engineering Mechanics, UT Austin, Austin, TX, USA
5. Department of Computer Science, Vanderbilt University, Nashville, TN, USA