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Beam-ACO for the Travelling Salesman Problem with Time Windows

Christian Blum and Manuel Lopez-Ibanez

Introduction

This is the Beam-ACO software used in our papers

This is not the exact version of the software used in those papers, since further modifications have been done along the way. Therefore, if something is not working or you cannot reproduce the results in those papers, please report a bug and we will find out what has changed with respect to older versions.

Please, if you use this software in any publication, give proper credit to us by citing the above papers. See the section "License" below for details.

Building

The programming language is C++, and the software has been tested on GNU/Linux using GCC >= 4.8.

Change the current directory to src and invoke make. For testing use:

make DEBUG=1

For final results, use

make DEBUG=0

The objective type can be selected by adding either OBJECTIVE=TOURCOST or OBJECTIVE=MAKESPAN to the call to make. By default, the code is compiled for integer values. If your data is real-valued, you need to recompile with NUMBER_TYPE=DOUBLE. For example,

make DEBUG=0 OBJECTIVE=MAKESPAN NUMBER_TYPE=DOUBLE

See the parameters available using:

./beamaco_tsptw --help

You can find test instances at https://lopez-ibanez.eu/tsptw-instances

License

This software is Copyright (C) 2008 - 2015

Manuel Lopez-Ibanez and Christian Blum

This program is free software (software libre); you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

The file LICENSE contains a copy of the GNU General Public License; if not, you can obtain a copy of the GNU General Public License at http://www.gnu.org/copyleft/gpl.html

This software includes code from various sources:

  • The GNU Scientific Library (GSL) is Copyright (C) The GSL Team, under the terms of the GPL.

IMPORTANT NOTE: Please be aware that the fact that this program is released as Free Software does not excuse you from scientific propriety, which obligates you to give appropriate credit! If you write a scientific paper describing research that made substantive use of this program, it is your obligation as a scientist to (a) mention the fashion in which this software was used in the Methods section; (b) mention the algorithm in the References section. The appropriate citation is:

Manuel López-Ibáñez and Christian Blum. Beam-ACO for the travelling salesman problem with time windows. Computers & Operations Research, 37(9):1570-1583, 2010. doi: 10.1016/j.cor.2009.11.015

Manuel López-Ibáñez, Christian Blum, Jeffrey W. Ohlmann, and Barrett W. Thomas. The Travelling Salesman Problem with Time Windows: Adapting Algorithms from Travel-time to Makespan Optimization. Applied Soft Computing, 13(9):3806–3815, 2013. doi: 10.1016/j.asoc.2013.05.009