An Efficient Competitive Strategy for Learning a Polygon

Frank Hoffmann, Christian Icking, Rolf Klein, Klaus Kriegel
Institut für Informatik
Freie Universität Berlin
email: hoffmann, kriegel@inf.fu-berlin.de
FernUniversität Hagen
Praktische Informatik VI
email: Rolf.Klein@FernUni-Hagen.de, Christian.Icking@FernUni-Hagen.de
Report B 96-01
February 1996


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An Efficient Competitive Strategy for Learning a Polygon We provide a competitive strategy for a mobile robot with vision, that has to explore an unknown simple polygon starting from and returning to a given point x0 on the boundary. Our strategy creates a tour that does not exceed in length 133 times the length of the shortest watchman route from x0. It has been claimed before by other authors that a competitive strategy with factor 2016 exists for this problem; but no proof has appeared except for the easy rectilinear case.