APPROXIMATION ALGORITHMS WITH CONSTANT FACTORS FOR A SERIES OF ASYMMETRIC ROUTING PROBLEMS

E. D. Neznakhina; Незнахина Е. Д.; Yu. Yu. Ogorodnikov; Огородников Ю. Ю.; K. V. Rizhenko; Рыженко К. В.; M. Yu. Khachay; Хачай М. Ю.

doi:10.31857/S268695432360218X

APPROXIMATION ALGORITHMS WITH CONSTANT FACTORS FOR A SERIES OF ASYMMETRIC ROUTING PROBLEMS

Authors: Neznakhina E.D.¹^,2, Ogorodnikov Y.Y.¹^,2, Rizhenko K.V.¹, Khachay M.Y.¹
Affiliations:
1. N.N. Krasovskii Institute of Mathematics and Mechanics
2. Ural federal university
Issue: Vol 514, No 1 (2023)
Pages: 89-97
Section: MATHEMATICS
URL: https://journals.rcsi.science/2686-9543/article/view/247096
DOI: https://doi.org/10.31857/S268695432360218X
EDN: https://elibrary.ru/CYSMDZ
ID: 247096

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Abstract
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Abstract

In this paper, the first fixed-ratio approximation algorithms are proposed for the series of asymmetric settings of the well-known combinatorial routing problems. Among them are the Steiner cycle problem, the prize-collecting traveling salesman problem, the minimum cost cycle cover problem by a bounded number of cycles, etc. Almost all the proposed algorithms rely on original reductions of the considered problems to auxiliary instances of the Asymmetric Traveling Salesman Problem and employ the breakthrough approximation results for this problem obtained recently by O. Svensson, J. Tarnawski, L. Végh, V. Traub and J. Vygen. On the other hand, approximation of the cycle cover problem was proved by more deep extension of their approach.

Keywords

asymmetric traveling salesman problem, approximation algorithm, constant ratio, Steiner cycle problem, Vehicle Routing Problem, Cycle Cover Problem

References

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VRP-REP: the vehicle routing problem repository. http://www.vrp-rep.org/ Дата обращения 12.09.23.