ae0434d910
There is a bugfix in here as well: one of the probabilities was being taken the wrong way around. The result should have been to make single-letter groups very often, I guess? Fixing this bug doesn't show any change in Copycat's macro behavior, except that it seems like average temperatures have gotten hotter.
co.py.cat
An implementation of Douglas Hofstadter's copycat algorithm. The copycat algorithm is explained on Wikipedia, and that page has many links for deeper reading.
This implementation is a copycat of Scott Boland's Java implementation, but re-written into Python. It's not a direct translation - but based on his code. I did not carry over the GUI, as this version can more usefully be run from command line, or imported for use by other Python scripts.
In cases where I could not grok the Java implementation easily I took ideas from the LISP implementation, or directly from Melanie Mitchell's "Analogy-Making as Perception"
I also tried to make the code more pythonic.
Installation
There are no particular installation instructions, just clone and run, e.g.
$ git clone https://github.com/jalanb/co.py.cat.git
$ cd co.py.cat/copycat
$ python main.py abc abd ijk
Running
The script takes three arguments. The first two are a pair of triplets with some change, for example "abc" and "abd". The third is a triplet which the script should try to change analogously
For example the following invocation will probably display "ijl"
$ python main.py abc abd ijk