Equivalent cyclic polygon of a euclidean travelling salesman problem tour and modified formulation

A. Herraiz (), M. Gutierrez () and M. Ortega-Mier ()
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A. Herraiz: Universidad Politécnica de Madrid
M. Gutierrez: Universidad Politécnica de Madrid
M. Ortega-Mier: Universidad Politécnica de Madrid

Central European Journal of Operations Research, 2022, vol. 30, issue 4, No 12, 1427-1450

Abstract: Abstract We define a geometric transformation of Euclidean Travelling Salesman Problem (TSP) tours that leads to a new formulation of the TSP. For every Euclidean TSP n-city tour, it is possible to construct an inscribed n-polygon (Equivalent Cyclic Polygon, ECP) such that the lengths of the edges are equal to the corresponding TSP tour links and follow the same sequence order. The analysis of the ECP elicits the possibility of defining a new objective function in terms of angles instead of distances. This modification opens the way to identify characterizing geometric parameters of the TSP as well as to explore new heuristics based on the inclusion of additional constraints. The experimentation with a set of cases shows promising results compared to the traditional compact formulations. The behavior of the ECP-based TSP formulations is better when the nodes of the TSP are randomly or evenly distributed.

Keywords: Traveling salesman problem; Euclidean TSP; Equivalent cyclic polygon; TSP heuristic (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1007/s10100-021-00784-z

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