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- From: chyde@pecos.ads.com (Clinton Hyde)
- Subject: Re: forward-chaining, Rete-type, OPS5-like packages available ?
- In-Reply-To: secrist@kxovax.enet.dec.com's message of 2 Nov 92 18:52:30 GMT
- Message-ID: <CHYDE.92Nov5145933@pecos.ads.com>
- Lines: 25
- Sender: usenet@chesapeake.ads.com (USENET News)
- Organization: Advanced Decision Systems, Mountain View, CA 94043, +1 (415)
- 960-7300
- References: <2161@sousa.ltn.dec.com>
- Date: Thu, 5 Nov 1992 19:59:33 GMT
-
-
- I don't know about a summary, but a version of OPS5 is freely
- available in Lisp. I've had it for years, and built a reasonably
- friendly UI for it on the Xplorer. it runs about 32 rules/sec on an
- Exp-1, ~120 rules/sec on an Exp-2, about 200 on an Exp-2+.
-
- it is grossly inefficient, building this humonguous network of stuff
- using property-lists (well, the code dates from late 70s, so that's
- not too surprising). you'd think that use of more compact structures
- of some sort ought to speed things up a bit. I have not tried to
- dissect the code enough to make this kind of change.
-
- be happy to supply all of the above, including the NASA benchmarks
- code (some mid-80s examples, including the famous monkeys&bananas).
-
- it runs about 200k, or thereabouts.
-
- -- clint
- --
-
- Clint Hyde "Give me a LispM or give me death!" -- anonymous
-
- Advanced Decision Systems/BAH Internet: chyde@chesapeake.ads.com
- 1953 Gallows Rd, Suite 600
- Vienna, VA 22182-3934 (703) 902-7130
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