Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/28894
Appears in Collections:Computing Science and Mathematics Journal Articles
Peer Review Status: Refereed
Title: A New Generalized Partition Crossover for the Traveling Salesman Problem: Tunneling Between Local Optima (Forthcoming)
Author(s): Tinós, Renato
Whitley, Darrell
Ochoa, Gabriela
Contact Email: gabriela.ochoa@stir.ac.uk
Keywords: Traveling salesman problem
recombination operator
evolutionary combinatorial op- timization
Citation: Tinós R, Whitley D & Ochoa G (2019) A New Generalized Partition Crossover for the Traveling Salesman Problem: Tunneling Between Local Optima (Forthcoming). Evolutionary Computation.
Abstract: Generalized Partition Crossover (GPX) is a deterministic recombination operator developed for the Traveling Salesman Problem. Partition crossover operators return the best of 2 k reachable offspring, where k is the number of recombining components. This paper introduces a new GPX2 operator, which finds more recombining components than GPX or Iterative Partial Transcription (IPT). We also show that GPX2 has O(n) runtime complexity, while also introducing new enhancements to reduce the execution time of GPX2. Finally, we experimentally demonstrate the efficiency of GPX2 when it is used to improve solutions found by multi-trial Lin-Kernighan-Helsgaum (LKH) algorithm. Significant improvements in performance are documented on large (n > 5000) and very large (n = 100, 000) instances of the Traveling Salesman Problem.
Rights: This is is the author's final version of an article accepted for publication in Evolutionary Computation published by MIT Press.

Files in This Item:
File Description SizeFormat 
Gen_Partitition-crossover-ecj2019.pdfFulltext - Accepted Version634.73 kBAdobe PDFView/Open



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.