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Archive-name: auto/comp.ai.shells/Expert-System-and-Machine-Learning-Program-for-the-MAC


FOCL, an expert system shell and machine learning program, is now
available by anonymous ftp from ics.uci.edu

The expert system has a number of capabilities:

* A backward-chaining rule interpreter.
* A graphical rule and fact editor.
* Graphical display of the rule base.
* (Simple) Natural language explanation of inferences
* Menu-based facilities for editing rules and adding natural language
  translations to rules.
* Optional typing of variables and checking the rule base for type conflicts
* Tracing of rules


The machine learning program extends Quinlan's FOIL program by
containing a compatible explanation-based learning component.  FOCL
learns Horn Clause programs from examples and (optionally) background
knowledge.

The expert system has been used successfully in an undergraduate
laboratory course. A 75 page manual (that should print on any
Macintosh printer) and sample rule bases are included.  A minimum of
4MB of memory is recommended for the application.

For details on FOCL, see:
Pazzani, M. & Kibler, D. (1992). The role of prior knowledge in
inductive learning. Machine Learning, 9, 54-97.

It is available in one of two forms:
1. A (binhexed, Compacted) Macintosh application.  This is stored in
pub/SaranWrap/KR-FOCL-ES.cpt.hqx

If you don't have access to ftp, and you want a copy of the Macintosh
application, send 2 800K disks and a stamped self-addressed envelope
to:

Mike Pazzani
ICS Dept
UC Irvine,
Irvine, CA 92717
USA

2. Common lisp source code.  See the file pub/SaranWrap/README for
details on ftping the source code.  This is portable source code for
the machine learning program only, since the interface depends on
the MAC.

If you use a copy of FOCL, please send mail to pazzani@ics.uci.edu so
we can inform you of upgrades