[1
]Department of Aeronautics and Astronautics, Stanford University, Stanford, CA, USA
[2
]Department of Electrical and Computer Engineering, University of Waterloo, Waterloo,
ON, Canada
[3
]Laboratory for Information and Decision Systems, Aeronautics and Astronautics Department,
Massachusetts Institute of Technology, Cambridge, MA, USA
[4
]Computer Science and Artificial Intelligence Laboratory, Electrical Engineering and
Computer Science Department, Massachusetts Institute of Technology, Cambridge, MA,
USA