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RE: Clips behavior

From: Paul Vincent <pvincent@tibco.com>
Date: Thu, 26 Nov 2009 00:52:37 -0800
Message-ID: <A92210407BA7004199621BE5F0AC5D8B01CFDCB0@NA-PA-VBE04.na.tibco.com>
To: "Gary Hallmark" <gary.hallmark@oracle.com>
Cc: "RIF WG" <public-rif-wg@w3.org>, "Neal Wyse" <neal.wyse@oracle.com>
Gary - can you explain what you mean by " PRD should consider all rule vars in the IF part, even existential vars, as part of the rule instance" ?

Surely PRD accommodates this now - i.e. rule chaining is not restricted to some explicitly defined rule variable?


Paul Vincent 


> -----Original Message-----
> From: public-rif-wg-request@w3.org [mailto:public-rif-wg-request@w3.org]
> On Behalf Of Gary Hallmark
> Sent: 25 November 2009 16:14
> To: RIF WG; Neal Wyse
> Subject: Fwd: Clips behavior
> 
> A colleague and I have tested OBR, Jess, and Clips refraction behavior.
> All are consistent. All contradict PRD. I do not think the issue is
> whether actions are effective immediately, although there may also be
> issues with that. Rather, the issue ssems to be that PRD should
> consider all rule vars in the IF part, even existential vars, as part
> of the rule instance. Thus far, I have only heard that ILOG works like
> PRD says, and I haven't actually seen a test report verifying that.
> 
> -------- Original Message --------
> Subject: Clips behavior
> From: Neal Wyse <neal.wyse@oracle.com>
> To: Gary Hallmark <Gary.Hallmark@oracle.com>
> CC: null
> 
> Hi Gary,
> 
> I've attached 3 Clips examples.
> rif1.clp - Modify_loop test
> rif2.clp, rif3.clp - two approaches to the Modify_noloop test
> They all loop with Clips which is what I expected.
> I'm not sure if we can get closer than that for the noloop test.
> 
> Neal
> (deftemplate foo
>     (slot count)
> )
> 
> (defrule r3
>  (and
>    ?f1 <- (foo (count ?c))
>    (not (not (test (> ?c 0))))
>  )
>  =>
>  (modify ?f1 (count (- ?c 1)))
>  (printout t (str-cat "r3 fired: ") ?c crlf)
> )
> 
> (assert (foo (count 10)))
> (run)
> (deftemplate foo
>     (slot count)
> )
> 
> (defrule r1
>    ?f1 <- (foo (count ?c&:(> ?c 0)))
>  =>
>  (modify ?f1 (count (- ?c 1)))
>  (printout t (str-cat "r1 fired: ") ?c crlf)
> )
> 
> (assert (foo (count 10)))
> (run)
> (deftemplate foo
>     (slot count)
> )
> 
> (defrule r2
>  (and
>    ?f1 <- (foo)
>    (not (and  (foo (count ?c))
>       (test (not (> ?c 0))))
>    )
>  )
>  =>
>  (bind ?cnt (fact-slot-value ?f1 count))
>  ;(modify ?f1 (count (- (fact-slot-value ?f1 count) 1)))
>  (modify ?f1 (count (- ?cnt 1)))
>  (printout t (str-cat "r2 fired: ") ?cnt crlf)
> )
> 
> (assert (foo (count 10)))
> (run)
Received on Thursday, 26 November 2009 08:53:21 GMT

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