The Center for Research on Concepts and Cognition
The Copycat project by Melanie Mitchell sought to develop FARG architectural ideas in the Copycat domain of letter-string analogy problems (and see more from Mitchell) e.g. "if abc goes to abd, what does ijk go to?", or "aqc -> abc, pqc -> ?" For obtaining the old code or a Java clone of Copycat, go to Melanie's own page. Also see Metacat.