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|Title:||Deep learning as a competitive feature-free approach for automated algorithm selection on the traveling salesperson problem|
|Citation:||Proceedings of the 16th International Conference on Parallel Problem Solving from Nature (PPSN XVI), as published in Parallel Problem Solving from Nature – PPSN XVI, Part I, 2020 / vol.12269, pp.48-64|
|Series/Report no.:||Lecture Notes in Computer Science; 12269|
|Conference Name:||International Conference on Parallel Problem Solving from Nature (PPSN) (05 Sep 2020 - 09 Sep 2020 : Leiden, The Netherlands)|
|Moritz Seiler, Janina Pohl, Jakob Bossek, Pascal Kerschke, and Heike Trautmann|
|Abstract:||In this work we focus on the well-known Euclidean Traveling Salesperson Problem (TSP) and two highly competitive inexact heuristic TSP solvers, EAX and LKH, in the context of per-instance algorithm selection (AS). We evolve instances with 1 000 nodes where the solvers show strongly different performance profiles. These instances serve as a basis for an exploratory study on the identification of well-discriminating problem characteristics (features). Our results in a nutshell: we show that even though (1) promising features exist, (2) these are in line with previous results from the literature, and (3) models trained with these features are more accurate than models adopting sophisticated feature selection methods, the advantage is not close to the virtual best solver in terms of penalized average runtime and so is the performance gain over the single best solver. However, we show that a feature-free deep neural network based approach solely based on visual representation of the instances already matches classical AS model results and thus shows huge potential for future studies.|
|Keywords:||Automated algorithm selection; Traveling Salesperson Problem; Feature-based approaches; Deep learning|
|Rights:||© Springer Nature Switzerland AG 2020|
|Appears in Collections:||Computer Science publications|
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