Abstract
The spanning ratio and maximum detour of a graph G embedded in a metric space measure how well G approximates the minimum complete graph containing G and metric space, respectively. In this paper we show that computing the spanning ratio of a rectilinear path P in L 1 space has a lower bound of Ω(n logn) in the algebraic computation tree model and describe a deterministic O(n log2 n) time algorithm. On the other hand, we give a deterministic O(n log2 n) time algorithm for computing the maximum detour of a rectilinear path P in L 1 space and obtain an O(n) time algorithm when P is a monotone rectilinear path.
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Grüne, A. et al. (2010). Spanning Ratio and Maximum Detour of Rectilinear Paths in the L 1 Plane. In: Cheong, O., Chwa, KY., Park, K. (eds) Algorithms and Computation. ISAAC 2010. Lecture Notes in Computer Science, vol 6507. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17514-5_11
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DOI: https://doi.org/10.1007/978-3-642-17514-5_11
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