Path: utzoo!utgpu!watserv1!watmath!att!bellcore!rutgers!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!rpi!crdgw1!gecrdvm1!meltsne
From: MELTSNE@gecrdvm1.crd.ge.com
Newsgroups: comp.lang.lisp
Subject: Re: PD CL Frame Rep Languages Wanted
Message-ID: <90191.181940MELTSNE@GECRDVM1.BITNET>
Date: 10 Jul 90 22:19:40 GMT
References: <9438@bunny.GTE.COM>
Organization: General Electric Corporate Research & Development
Lines: 24

For a number of reasons, I'm fond of the frame language KR from Carnegie Mellon
University.  It's available as part of the Garnet distribution, but does run
without the rest of the system.

Contact Brad.Myers@a.gp.cs.cmu.edu for more information.

It includes nested schemas, a simple constraint system, multiple inheritance,
fairly efficient slot access, etc.  The documentation is okay, but not
extensive.

CMU also has Frulekit/Parmenides, which has an integrated rule system, cached
values, very efficient frame creation, and efficient slot access.  Contact
Peter Shell (Peter.Shell@ml.ri.cmu.edu) for more information.

Both are available free for non-commercial use after a software license is
signed by your company or institution.  It's probably a good idea to find a way
to give them some money if you're at a real company to support future work.

The packages aren't perfect, but are pretty good and the availability of
source code is a major plus.



                           Ken