A Small Improvement to the Upper Bound on the Integrality Ratio for the s-t Path TSP

04/15/2020

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by   Xianghui Zhong, et al.

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In this paper we investigate the integrality ratio of the standard LP relaxation for the metric s-t path TSP. We make a near-optimal choice for an auxiliary function used in the analysis of Traub and Vygen which leads to an improved upper bound for the integrality ratio of 1.5273.