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OPS5    
A programming language for rule-based {production
systems}. A rule consists of pre-condition(s) and a resulting
action.

The system checks its {working memory} to see if there are
rules whose pre-conditions are satisfied, if so, the action in
one selected satisfied rule is executed.

There is a {public domain} implementation of an OPS5
{interpreter} written by Charles L. Forgy
in 1977. It was first implemented in {Lisp} and later in
{BLISS}. It was also ported to {Common Lisp} by George Wood
and Jim Kowalski.

{CLIPS} is a language for writing {expert systems}, with some
of the capabilities of OPS5.

See also {C5}, {OPS83}, {OPS4}, {OPS5}, {OPS83}.

Inference Engine Tech, Cambridge MA.

{An OPS5 interpreter in Common LISP
(ftp://ftp.wustl.edu/mirrors/Unix-c/languages/ops5)}.

{A version by Mark Kantrowitz
(ftp://ftp.cs.cmu.edu/afs/cs.cmu.edu/user/mkant/Public/Lisp/)}.
.

["Programming Expert Systems in OPS5", L. Brownston et al, A-W
1985].

["An OPS5 Primer", Sherman et al, comes with OPS5 for DOS].

["Rule-Based Programming in the Unix System", G.T. Vesonder,
AT&T Tech J 67(1), 1988].

(1995-08-18)


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