Or Parmenides/Frulekit, also from CMU.
Robert Swindells
GenRad Ltd.
Paul Haley wrote:
>Don't forget to check out the Lisp implementation of OPS5 that
>resides (I think) in the public domain. It would be an appropriate
>starting point, whether or not you are worried about CLIPS syntax
>compatibility.
>David Young wrote:
>> Hello Ernest. My apologies for sending this to the list; mail directly
>> to you is bouncing with a 'user unknown' message. Perhaps we're having
>> 'sendmail' troubles...
>>
>> I'm seriously considering building a Common Lisp implementation of
>> CLIPS, and including some of the more interesting features of Jess
>> (eg. object pattern matching). My motivation is the apparent dearth of
>> general-purpose expert system development tools freely-available to
>> the Lisp community. I've done a significant amount of research here;
>> the only useful platform I found was LOOM, and until recently this
>> product was only available via a bloody permission-gathering
>> process. The lack of such tools cost me eight months of prototyping
>> work, and I don't want others to undergo the same frustrations.
>>
>> [ FYI, LOOM is a hybrid OO modeling and inference engine implemented
>> in Common Lisp. LOOM 3.0 appears quite powerful, but sometimes all one
>> needs is a straight-forward rule-based system to get the job done. ]
>>
>> My suspicion right now is that most of the porting effort would rest
>> in the Rete implementation; Lisp's wonderful macro facility will
>> likely obviate the need for most (all?) of the parsing requirements
>> for CLIPS constructs ('defrule', 'deffacts', etc.).
>>
>> If you please I could use some information, such as 1) paper(s) read
>> to familiarize yourself with Rete and its implementation; 2) your
>> approach to Jess -- what pieces did you first build in order to
>> experiment with, and get a feel for, performance, interfaces, etc?; 3)
>> would you object to one or more Jess features appearing in my
>> port?. Things of this nature would be very helpful. Also, I would like
>> to GPL the resulting product; are you aware of any licensing issues
>> that might prohibit this?
>>
>> I'd appreciate your thoughts on this. Thanks much.
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