Abstract

A. Mudgal, C. Tovey, S. Greenberg and S. Koenig. Bounds on the Travel Cost of a Mars Rover Prototype Search Heuristic. SIAM Journal on Discrete Mathematics, 19, (2), 431-447, 2005.

Abstract: D* is a greedy heuristic planning method that is widely used in robotics, including several Nomad class robots and the Mars Rover Prototype, to reach a destination in unknown terrain. We obtain nearly sharp lower and upper bounds of Ω(n log n / log log n) and O(n log n) respectively on the worst-case total distance traveled by the robot, for the grid graphs on n vertices typically used in robotics applications. For arbitrary graphs, we prove an O(n log2 n) upper bound.

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