Genetic Evolution through Combination of Objects (GECO), version 2.1.1
GECO is an extensible, object-oriented framework for prototyping genetic algorithms in Common Lisp. GECO makes extensive use of CLOS, the Common Lisp Object System, to implement its functionality. The abstractions provided by the classes have been chosen with the intent both of being easily understandable to anyone familiar with the paradigm of genetic algorithms, and of providing the algorithm developer with the ability to customize all aspects of its operation. It comes with extensive documentation, in the form of a two PDF files (see below), and some simple examples are also provided to illustrate its intended use.
The official release is available from https://github.com/gpwwjr/GECO Among the files included in the official release are: README.md Basic information about the software (this file) CHANGES.txt Which gives a summary of the version history, including information about changes in each release COPYING.LIB-2.0 A copy of the GNU LIBRARY GENERAL PUBLIC LICENSE, Version 2, June 1991 All the source code, including the TeX source for the documentation GECO-pdf.tgz Unix-compressed documentation This archive includes: - geco.pdf, a normal printable PDF file - geco-hyperlinked.pdf, a hyperlinked version of geco.pdf, which is handy for online reading, but not as nice for printing
Copyright (C) 1992,1993,2020,2021 George P. W. Williams, Jr.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Author: George P. W. Williams, Jr. 1334 Columbus City Rd. Scottsboro, AL 35769-9014 [email protected]
This is an updated version as of 2020 (the original version has been long-neglected; it hasn't been updated since 1993). The current version has been updated to use the ASDF system definition/build system, and the files have all been converted to use unix line endings (line-feeds; previous versions used old the old MacOS convention of carriage-returns). I'm also now providing the documentation in PDF format (instead of PostScript in the earlier versions).
Bug reports, improvements, and feature requests should be sent to the author at the contact information above. I will try to respond to them. Ports to other lisps are also welcome.
I have gone to a lot of effort to make GECO portable among CLtL2 compliant Common Lisps. I tested the previous versions on several different lisp implemenations (MCL 2.0, ACL 4.1, and LCL 4.1). This version has been tested using Clozure CL 1.12 (macOS 10.15.7), and Steel Bank Common Lisp 2.0.11 (Ubuntu 20.04 Linux).
TO USE THIS SOFTWARE
- There is detailed documentation (~100 pages!) in geco.pdf There is also a hyperlinked version: geco-hyperlinked.pdf Both of these files are contained in the GECO-pdf.tgz archive
- Look at the system definition file geco.asd for some notes on how to load GECO. You should have a working installation of ASDF. (see https://common-lisp.net/project/asdf/) You will probably need to do something like this: (push #P"/Users/george/lisp/geco/" asdf:central-registry) and (asdf:load-system :geco)
- There are some conditional compilation options. See packages.lisp for more information.
- Some examples are provided to illustrate GECO's intended use. See the documentation for details.
- GECO is now available as part of the QuickLisp distribution system, (see https://www.quicklisp.org).