zcscup - run a zeroth level classifier system on the cups
zcscup [-specs string] [-steps integer] [-seed integer]
[-size integer] [-sinit double] [-lrate double]
[-drate double] [-trate double] [-crate double]
[-mrate double] [-grate double] [-cover double]
[-wild double] [-avelen integer] [-inv] [-mag inte-
ger] [-term string]
Train a zeroth level classifier system (ZCS) to solve the
cups problem with the implicit bucket brigade algorithm
and a genetic algorithm. Solving this problem requires
the ZCS to learn to remember important features from pre-
vious states, which makes this problem very challenging.
The ZCS always starts in the same initial position. It
interacts with its environment until it finds both cups,
which (only at that point) yields a reward. The simula-
tion then restarts with the ZCS placed at the original
location. The progress of the ZCS is continuously plot-
ted, while the statistics on the time to find both cups
are calculated and displayed. At the end of the simula-
tion the classifiers that make up the final ZCS are saved
to a log file.
World specification file.
Number of simulated trials.
Random seed for initial state.
Initial classifier strength.
BB learning rate.
BB discount rate.
Tax rate for strength reduce.
GA crossover rate.
GA mutation rate.
GA invocation rate.
Probability of # in cover.
Length of windowed average.
-inv Invert all colors?
How to plot points.
The file format for the specifications files must contain
the width and height of the world followed by the details
of the world in ASCII format, where '.' is an empty cell,
'O' is a wall, and 'F' represent a cup. See any of the
examples in the 'data' subdirectory of this distribution
for more details.
The log file, 'zcscup.log', contains one line per classi-
fier with the condition string, the action string, and the
strength of the classifier. The classifiers are sorted so
the the strongest classifiers are printed first.
The ASCII output of the program shows the most recent,
windowed average and the total average for the number of
steps needed to find both cups.
See the author's book, "The Computational Beauty of
Nature," for more details.
The simulation always restarts with the ZCS location at
position (0, 4), which really only makes sense for the
data file to work around this or tweak the source code to
try a different problem variation.
No sanity checks are performed to make sure that any of
the options make sense.
Copyright (c) 1997, Gary William Flake.
Permission granted for any use according to the standard
GNU ``copyleft'' agreement provided that the author's com-
ments are neither modified nor removed. No warranty is
given or implied.