JESS: shadow facts and backward chaining
Hi, Does backward chaining works with shadow facts ? (generally) Is there some known limitations ? If anyone has some examples to share, I would appreciate it. Thanks. _
JESS: Jess and JessDE vs Shadow facts
Hi, I'm currently looking to add Scala objects in Jess.It's working with Jess when I do a run. (Scala add the getter methods in the .class file)However, it's not working in JessDE even if a BeanInfo class file is also generated (in the same directory) by Scala (trough annotations). I can join some sample files if needed, but I remember seeing a different behavior with shadow facts like this before using Scala. Thanks. _
JESS: jessDE performance
Hi, It seems to me that jessDE performances are not as good as they were (I'm using the latest version). Is it something under work ?Can I do something to reduce the lag when I'm writing rules ? (I suspect it comes from the high number of templates I have). Thanks. _
RE: JESS: using annotations
Yeah, I knew about BeanInfo classes, but after using them for a while, I'm not too satisfied (usability). Of course I could write some code that produce a Deftemplate, but what I'm interested in is a solution that include JessDE working accordingly. That's why I was thinking about replacing the default Bean introspection mechanism, but I'm not even sure it would work for JessDE. Thanks again. > From: [EMAIL PROTECTED]> To: jess-users@sandia.gov> Subject: Re: JESS: using > annotations> Date: Wed, 16 Jul 2008 10:04:27 -0400> > Jess 7.1 still supports > JDK 1.4, so annotations aren't available. > Future Jess versions will support > Java 5+ .> > I like the fact that Jess supports the JavaBeans spec; it's nice > to be > able to refer people to that for details. It's one less "invention" > > that needs to be maintained by us.> > It's not true, of course, that you're > restricted to following naming > conventions, as JavaBeans includes the > BeanInfo concept for describing > variances from the conventions.> > In any > case, the jess.Deftemplate class has a complete public API; > you should be > able write a Userfunction in Java which turned classes > into Deftemplates > following annotations using whatever scheme you > like. If you do this, and > describe it in our Wiki, then other people > could use it too!> > > On Jul > 15, 2008, at 11:54 PM, Skeptic 2000 wrote:> > >> > Hi,> >> > Have you > considered using annotations instead of naming scheme to > > create > deftemplates associated to shadow facts ?> >> > Do you think it would be > difficult thing to "hack" ?> >> > Thanks.> >> >> > > -> Ernest > Friedman-Hill> Informatics & Decision Sciences, Sandia National Laboratories> > PO Box 969, MS 9012, Livermore, CA 94550> http://www.jessrules.com> > > > > > > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _
JESS: using annotations
Hi, Have you considered using annotations instead of naming scheme to create deftemplates associated to shadow facts ? Do you think it would be difficult thing to "hack" ?Thanks. _
RE: JESS: introspection of shadow facts from 7.0 to 7.1
I just noticed that much of them are still working.The ones that are giving me errors are the one used in a defquery. I'll try to build a simple example. Thanks. > From: [EMAIL PROTECTED]> To: jess-users@sandia.gov> Subject: Re: JESS: > introspection of shadow facts from 7.0 to 7.1> Date: Tue, 15 Jul 2008 > 11:24:45 -0400> > Hmmm. You can certainly still redefine functions. Can you > show me an > example of what's going wrong?> > On Jul 15, 2008, at 10:32 AM, > Skeptic 2000 wrote:> > >> > Hi,> >> > Another "problem" encountered during > the 7.0->7.1 migration.> >> > I used to add empty user function defs in the > .clp file and add > > those functions programmatically.> >> > Now Jess seems > to ignore the re-definition and call the empty shell.> >> > It's a known > issue ?> >> > Thanks for help.> >> >> >> > > From: [EMAIL PROTECTED]> > > To: > jess-users@sandia.gov> > > Subject: Re: JESS: introspection of shadow facts > from 7.0 to 7.1> > > Date: Mon, 14 Jul 2008 18:04:27 -0400> > >> > > On Jul > 14, 2008, at 10:30 AM, Skeptic 2000 wrote:> > >> > > >> > > > Hi,> > > >> > > > >> > > > I updated from 7.0p1 to 7.1 recently and JessDE doesn't recognize> > > > > the stuff specified in my BeanInfo classes anymore (it still works> > > > > at runtime).> > > >> > > >> > > > Is there some official changes in the > introspection mechanisms?> > > >> > >> > >> > > Jess itself behaves the same > way as always in this area, but the> > > JessDE is being a better Eclipse > citizen right now; unfortunately > > this> > > means that some things don't > work as well. This should improve in > > the> > > next few point releases.> > > >> > > There are some things the new JessDE does much better than the old;> > > > for example, working with projects located outside the workspace > > works> > > > now.> > >> > > -> > > > Ernest Friedman-Hill> > > Informatics & Decision Sciences, Sandia > National Laboratories> > > PO Box 969, MS 9012, Livermore, CA 94550> > > > http://www.jessrules.com> > >> > >> > >> > >> > >> > >> > > > > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED] > > '> > > > in the BODY of a message to [EMAIL PROTECTED], NOT to the list> > > (use > your own address!) List problems? Notify [EMAIL PROTECTED] > > .> > > > > > >> >> > >> > -> Ernest > Friedman-Hill> Informatics & Decision Sciences, Sandia National Laboratories> > PO Box 969, MS 9012, Livermore, CA 94550> http://www.jessrules.com> > > > > > > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _
RE: JESS: introspection of shadow facts from 7.0 to 7.1
Hi, Another "problem" encountered during the 7.0->7.1 migration. I used to add empty user function defs in the .clp file and add those functions programmatically. Now Jess seems to ignore the re-definition and call the empty shell. It's a known issue ? Thanks for help. > From: [EMAIL PROTECTED]> To: jess-users@sandia.gov> Subject: Re: JESS: > introspection of shadow facts from 7.0 to 7.1> Date: Mon, 14 Jul 2008 > 18:04:27 -0400> > On Jul 14, 2008, at 10:30 AM, Skeptic 2000 wrote:> > >> > > Hi,> >> >> > I updated from 7.0p1 to 7.1 recently and JessDE doesn't > recognize > > the stuff specified in my BeanInfo classes anymore (it still > works > > at runtime).> >> >> > Is there some official changes in the > introspection mechanisms?> >> > > Jess itself behaves the same way as always > in this area, but the > JessDE is being a better Eclipse citizen right now; > unfortunately this > means that some things don't work as well. This should > improve in the > next few point releases.> > There are some things the new > JessDE does much better than the old; > for example, working with projects > located outside the workspace works > now.> > > -> Ernest > Friedman-Hill> Informatics & Decision Sciences, Sandia National Laboratories> > PO Box 969, MS 9012, Livermore, CA 94550> http://www.jessrules.com> > > > > > > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _
JESS: introspection of shadow facts from 7.0 to 7.1
Hi, I updated from 7.0p1 to 7.1 recently and JessDE doesn't recognize the stuff specified in my BeanInfo classes anymore (it still works at runtime). Is there some official changes in the introspection mechanisms? Thanks for help. _
JESS: observing partial activation of rules
Hi, I'm curious how this : http://ctat.pact.cs.cmu.edu/docs/ctat_2_1/cog_tutor_jess_tools.html#why_not can be achieved.It is something that require a modification of Jess ? I don't see how to find that information using the public API. Thanks for help. _ Envoie un sourire, fais rire, amuse-toi! Employez-le maintenant! http://www.emoticonesgratuites.ca/?icid=EMFRCA120
JESS: batch & require
Hi,I'm having a problem when I batch two different .clp files that require the same third .clp file. File1.clp Some defclasses File2.clp require file1Some rules using file1 defclasses File3.clp require file 1 Some other rules using file1 defclasses rete.batch(file2); rete.batch(file3); => Problems when creating templates from defclass. If it doesn't ring a bell, I'll give more details.Thanks. _
JESS: shadow fact + multislot
Hi, Would it be possible to have a shadow fact with a multislot ? (I know a shadow fact can have an array-based property, but that wouldn't work with multislot pattern matching, what I'm looking for)Thanks _ Envoie un sourire, fais rire, amuse-toi! Employez-le maintenant! http://www.emoticonesgratuites.ca/?icid=EMFRCA120
RE: JESS: adding shadow facts in Jess
Oops, I simply forgot the ( ) around the new and the Jess editor didn't see an
error there.
JFL
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: JESS: adding shadow facts in
JessDate: Thu, 9 Aug 2007 15:30:58 -0400
Hi, I'm trying to figure why the ruel2 doesn't fire :
(defclass SFA ca.usherbrooke.astus.prototype.pedagogue.SFA)
(deftemplate x
(slot y)
)
(defrule rule1
(x)
=>
(printout t "rule1 fired")
(add new SFA)
)
(defrule rule2
(SFA)
=>
(printout t "rule2 fired")
)
(reset)
(assert (x (y 1)))
(run) Here is the SFA class, but it's probably irrelevant.
public class SFA {
private int a;
private int b;
public SFA() {
a = 3;
b = 4;
}
public int getA() {
return a;
}
public int getB() {
return b;
}
}
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JESS: adding shadow facts in Jess
Hi,
I'm trying to figure why the ruel2 doesn't fire :
(defclass SFA ca.usherbrooke.astus.prototype.pedagogue.SFA)
(deftemplate x
(slot y)
)
(defrule rule1
(x)
=>
(printout t "rule1 fired")
(add new SFA)
)
(defrule rule2
(SFA)
=>
(printout t "rule2 fired")
)
(reset)
(assert (x (y 1)))
(run)
Here is the SFA class, but it's probably irrelevant.
public class SFA {
private int a;
private int b;
public SFA() {
a = 3;
b = 4;
}
public int getA() {
return a;
}
public int getB() {
return b;
}
}
_
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RE: JESS: dealing with shadow facts having null properties
Well, I'm really sorry...JFL
> From: [EMAIL PROTECTED]> Subject: Re: JESS: dealing with shadow facts having
> null properties> Date: Fri, 3 Aug 2007 15:23:03 -0400> To:
> jess-users@sandia.gov> > Look closely at your stack trace: it says "Message:
> Called method > threw an exception." If you called getCause() on the
> JessException, > it would return a NullPointerException, and if you looked at
> that > NPE's stack trace, you'd see it was thrown by the getA() method of >
> your Test class. Here are the relevant lines from your code:> > private
> Integer a = null;> ...> public int getA() {> return a;> }> > Note that the
> type of variable "a" is Integer, but getA() is > returning an int. That means
> that, due to auto-unboxing, the Java > compiler is going to emit code as if
> you had written something like> > public int getA() {> return a.intValue();>
> }> > > and since "a" is null, this line throws a NullPointerException. It's >
> not Jess's fault if your getter methods throw NPEs when called!> > > > > > On
> Aug 3, 2007, at 2:51 PM, Skeptic 2000 wrote:> > >> > Hi and thanks a lot for
> helping, the details are here :> >> > That's the ShadowFact :> >> > public
> class Test {> >> >> >> >> > private Integer a = null;> >> > private Integer b
> = 4;> >> >> >> >> > public Test() {> >> >> >> > }> >> >> >> >> > public int
> getA() {> >> > return a;> >> > }> >> >> >> >> > public int getB() {> >> >
> return b;> >> > }> >> >> > }> >> > That's the .CLP file :> >> > (defclass
> Test xxx.yyy.zzz.Test)> >> >> > (defrule testrule> >> > (Test (a ?a) (b ?b))>
> >> > =>> >> > (printout t "testrule ok")> >> > )> >> > That's the java code
> :> >> > void functionX() {> > ...> > jessEngine.add(new Test());> > ...> > }>
> >> > That's the exception :> >> > Jess reported an error in routine
> DefinstanceList.updateMultipleSlots.> >> > Message: Called method threw an
> exception.> >> > at
> jess.DefinstanceList.getSlotValueFromObject(DefinstanceList.java: > > 371)>
> >> > at jess.DefinstanceList.setAllSlotValuesFromObject > >
> (DefinstanceList.java:353)> >> > at
> jess.DefinstanceList.createNewShadowFact(DefinstanceList.java:332)> >> > at
> jess.DefinstanceList.definstance(DefinstanceList.java:111)> >> > at
> jess.Rete.definstance(Rete.java:1903)> >> > at
> jess.Rete.definstance(Rete.java:1883)> >> > at jess.Rete.add(Rete.java:2023)>
> > ...> >> >> > JFL> >> >> >> >> >> > > From: [EMAIL PROTECTED]> > > Subject:
> Re: JESS: dealing with shadow facts having null properties> > > Date: Fri, 3
> Aug 2007 10:48:15 -0400> > > To: jess-users@sandia.gov> > >> > > I can't
> reproduce anything like this; can you show me a stack trace> > > (run
> jess.Main with -stacktrace to see a full error trace).> > >> > > On Aug 2,
> 2007, at 6:12 PM, Skeptic 2000 wrote:> > >> > > >> > > > When I add a shadow
> fact with a property having a null value, I > > get> > > > an exception (in
> updateMultiSlot IRRC).> > > >> > > > JFL> > > >> > > > > From: [EMAIL
> PROTECTED]> > > > > Subject: Re: JESS: dealing with shadow facts having null
> > > properties> > > > > Date: Thu, 2 Aug 2007 15:57:55 -0400> > > > > To:
> jess-users@sandia.gov> > > > >> > > > > Jess has been able to handle null
> properties for a long time; > > 6.1p8> > > > > can handle them, as can the
> current versions. What problem > > are you> > > > > having, exactly?> > > >
> >> > > > > On Aug 2, 2007, at 2:19 PM, Skeptic 2000 wrote:> > > > >> > > > >
> >> > > > > > Hi,> > > > > >> > > > > > I need to add in the working memory
> some shadow facts with> > > > > > properties whose values are null.
>
RE: JESS: dealing with shadow facts having null properties
Hi and thanks a lot for helping, the details are here :
That's the ShadowFact :
public class Test {
private Integer a = null;
private Integer b = 4;
public Test() {
}
public int getA() {
return a;
}
public int getB() {
return b;
}
}
That's the .CLP file :
(defclass Test xxx.yyy.zzz.Test)
(defrule testrule
(Test (a ?a) (b ?b))
=>
(printout t "testrule ok")
)
That's the java code :
void functionX() {
...
jessEngine.add(new Test());
...
}
That's the exception :
Jess reported an error in routine DefinstanceList.updateMultipleSlots.
Message: Called method threw an exception.
at jess.DefinstanceList.getSlotValueFromObject(DefinstanceList.java:371)
at jess.DefinstanceList.setAllSlotValuesFromObject(DefinstanceList.java:353)
at jess.DefinstanceList.createNewShadowFact(DefinstanceList.java:332)
at jess.DefinstanceList.definstance(DefinstanceList.java:111)
at jess.Rete.definstance(Rete.java:1903)
at jess.Rete.definstance(Rete.java:1883)
at jess.Rete.add(Rete.java:2023)
...
JFL
> From: [EMAIL PROTECTED]> Subject: Re: JESS: dealing with shadow facts having
> null properties> Date: Fri, 3 Aug 2007 10:48:15 -0400> To:
> jess-users@sandia.gov> > I can't reproduce anything like this; can you show
> me a stack trace > (run jess.Main with -stacktrace to see a full error
> trace).> > On Aug 2, 2007, at 6:12 PM, Skeptic 2000 wrote:> > >> > When I add
> a shadow fact with a property having a null value, I get > > an exception (in
> updateMultiSlot IRRC).> >> > JFL> >> > > From: [EMAIL PROTECTED]> > >
> Subject: Re: JESS: dealing with shadow facts having null properties> > >
> Date: Thu, 2 Aug 2007 15:57:55 -0400> > > To: jess-users@sandia.gov> > >> > >
> Jess has been able to handle null properties for a long time; 6.1p8> > > can
> handle them, as can the current versions. What problem are you> > > having,
> exactly?> > >> > > On Aug 2, 2007, at 2:19 PM, Skeptic 2000 wrote:> > >> > >
> >> > > > Hi,> > > >> > > > I need to add in the working memory some shadow
> facts with> > > > properties whose values are null. Currently, my workaround
> is to> > > > use a "NullObject" to prevent Jess from crashing upon finding a>
> > > > null value.> > > >> > > > Is it the recommended way to do it ?> > > >>
> > > > JFL> > > >> > > > Soyez parmi les premiers à essayer Windows Live
> Mail.> > >> > > -> >
> > Ernest Friedman-Hill> > > Advanced Software Research Phone: (925) 294-2154>
> > > Sandia National Labs FAX: (925) 294-2234> > > PO Box 969, MS 9012 [EMAIL
> PROTECTED]> > > Livermore, CA 94550 http://www.jessrules.com> > >> > >
> > > > To
> unsubscribe, send the words 'unsubscribe jess-users > > [EMAIL PROTECTED]'> >
> > in the BODY of a message to [EMAIL PROTECTED], NOT to the list> > > (use
> your own address!) List problems? Notify owner-jess- > > [EMAIL PROTECTED]> >
> > > > >>
> >> >> > Soyez parmi les premiers à essayer Windows Live Mail.> >
> -> Ernest
> Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia
> National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]>
> Livermore, CA 94550 http://www.jessrules.com> >
> > To
> unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in
> the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own
> address!) List problems? Notify [EMAIL PROTECTED]>
> >
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RE: JESS: dealing with shadow facts having null properties
When I add a shadow fact with a property having a null value, I get an exception (in updateMultiSlot IRRC). JFL > From: [EMAIL PROTECTED]> Subject: Re: JESS: dealing with shadow facts having > null properties> Date: Thu, 2 Aug 2007 15:57:55 -0400> To: > jess-users@sandia.gov> > Jess has been able to handle null properties for a > long time; 6.1p8 > can handle them, as can the current versions. What problem > are you > having, exactly?> > On Aug 2, 2007, at 2:19 PM, Skeptic 2000 > wrote:> > >> > Hi,> >> > I need to add in the working memory some shadow > facts with > > properties whose values are null. Currently, my workaround is > to > > use a "NullObject" to prevent Jess from crashing upon finding a > > > null value.> >> > Is it the recommended way to do it ?> >> > JFL> >> > Soyez > parmi les premiers à essayer Windows Live Mail.> > > -> Ernest > Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia > National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]> > Livermore, CA 94550 http://www.jessrules.com> > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: dealing with shadow facts having null properties
Hi, I need to add in the working memory some shadow facts with properties whose values are null. Currently, my workaround is to use a "NullObject" to prevent Jess from crashing upon finding a null value.Is it the recommended way to do it ?JFL _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: Java 1.5 enums
Hi, As shown on JessWiki, I use the import functions to get my enum "class" in Jess :(import xx.yy.zz.MyEnum) then I try to match a slot of a shadow fact to one of the enum field : (defrule rule1(MyShadowFact (OBJECT ?o) (property1 MyEnum.xyz)) => ...) What I'm doing wrong ?Thanks. JFL _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
RE: JESS: exchanging values between ess and Java via UserFunction
Hi,> > doesn't know the exact type... so I use the javaObjectValue method to > > Value has a type() method which tells you what kind of Value you've got. > javaObjectValue() won't create an object -- it will only return an exusting > object, if there is one (for resolved values, only for types RU.STRING, > RU.SYMBOL, RU.JAVA_OBJECT.) Then I can switch on the type returned to do the Jess->Java transfer correctly. > >> > Second Problem : A second UserFunction return a integer value by doing > >> > :> > int x = ... ;> > return new Value(x);> > My first reaction was that > >> > the Value constructor that takes only an int isn't > public -- have you > >> > modified the source? You should be using the two-argument > one that > >> > lets you specify a type. But now, on re-reading, I see what's > probably > >> > happening: *autoboxing* in Java 5 and up. You're passing only an int > > >> > to the Value constructor, and there *is* no constructor that takes only > >> > an > int. There is one that takes only an Object, though, so Java is > >> > helpfully > converting your int to an Integer, and then Jess is creating > >> > a Value of type > JAVA_OBJECT. Grrr. > > Although Java 5 blurred the > >> > distinction between int and Integer, Jess still > treats them as > >> > distinct types. You should be using > > return new Value(x, > >> > RU.INTEGER);> > and then everything should work fine. Oops, I should have said that I had already figured that Java 5 features were probably linked to the problem. Any plan to fix the disparities between int and Integer in Jess ? (Probably not for backward compatibilty?) Again, thanks for all those quick and complete answers, many commercial products(!) doesn't have such a good "customer service". _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: exchanging values between ess and Java via UserFunction
Hi, I'm having some trouble with value exchange between Jess and Java via UserFunctions that are implemented in Java.First problem : A first UserFunction receives 1 argument from Jess and doesn't know the exact type, so I use the javaObjectValue method to extract in a Object variable. Problem occurs when the value sent from Jess is a simple integer, for example the result of (+ 3 5). Second Problem : A second UserFunction return a integer value by doing : int x = ... ; return new Value(x); But my rule that compares this result with a simple integer doesn't work : (test (eq 0 calltotheuserfunction)) My current solutions are : 1) (new Integer (+ 3 5)) 2) (test (eq 0 (calltotheuserfunction intValue))) But I don't like to add this "Java syntax" in my rules, is there a better way to fix those problems ?Thanks again ! _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: How to correctly fire the same rule for the "same facts"
Hi, this simple example show a problem I still have when designing Jess rules.What I should do to avoid this situation in which two instances of Y will be created. If what I try to do is not clear, please say so. Thanks. CLP file : (deftemplate X (slot a)) (deftemplate Y (slot s)) (defrule sum-X?x1 <- (X (a ?a1))?x2 <- (X (a ?a2))(not (test (eq ?x1 ?x2)))=>(assert (Y (s (+ ?a1 ?a2(printout t "y asserted " ?a1 " " ?a2 crlf)) (reset) (assert (X (a 3)))(assert (X (a 5))) (run) Result : Jess, the Rule Engine for the Java Platform Copyright (C) 2006 Sandia Corporation Jess Version 7.0p1 12/21/2006 y asserted 5 3 y asserted 3 5 _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: user functions and warning messages in plugin
Hi, If I add my user-functions trough Java instead of directly in the .clp files, how I can get rid of the warning messages in the plug-in ?Thanks for help. JFL _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: mark vs modify
Hi, Does a resetToMark after a mark is done undo the modify applied to the facts or only remove newly added facts ?If yes, how this apply to shadow facts ?Thanks _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
RE: JESS: < strange behavior
> > Hi,> >> > I have a rule looking something like :> >> > (defrule wcooo ; > > exemple pour un while> > (MyShadowfact (OBJECT ?o))> > (test (< (str-length > > (?o methodreturningastring "param")) 3))> > =>> > (printout t "rulefired" > > (str-length (?o methodreturningastring > > "param")) crlf))> >> > And I > > strangly get the rulefired message with values like 4, 5, 6, ...> >> > > > Remember that pattern-matching is driven by facts being asserted, > > > retracted, or modified. In particular, the test above will be > evaluated > > only when the object is first put into working memory, or > when a change > > event or modify call causes it to be reevaluated. My > guess is that your > > method methodreturningastring returns a value > which changes over time > > without Jess being notified in any way about > the change. You will need to > > tell Jess when this value changes -- for > example, by using the > > Rete.updateObject() method If I do an updateObject but : 1) none of the properties of the bean have changed 2) the methodreturningastring now returns a different value Does the pattern matching occurs ? (the answer seems to be no) JF _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: how to get the "rule text" from a defrule
Hi, With Jesp I can easily get the defrule of each of my rules in my .clp files and display their names in a Swing application. What I would like to do next is to display the actual text of the rule in this same application, can it be easily done ?Thanks. > From: [EMAIL PROTECTED]> Subject: Re: JESS: is jess a declaritive language?> > Date: Tue, 30 Jan 2007 22:03:15 -0500> To: jess-users@sandia.gov> > Well, > rules themselves are definitely a declarative programming > concept. But Jess > also offers an imperative language, and in fact the > right-hand-sides of > rules consist of imperative code.> > So in fact, Jess, and systems like it, > are hybrid declarative/ > imperative.> > On Jan 30, 2007, at 5:03 PM, Matthew > J Hutchinson wrote:> > > Hi everyone,> >> > I'm trying to categorize Jess in > terms of the different programming > > language paradigms. Is Jess > "declaritive"?> >> > Thanks,> > Matt> >> > > -> Ernest > Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia > National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]> > Livermore, CA 94550 http://www.jessrules.com> > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
RE: JESS: < strange behavior
I always do a jess.updateObject(myShadowFact) before the jess.run() call but I'll look again at it. Thanks. > From: [EMAIL PROTECTED]> Subject: Re: JESS: < strange behavior> Date: Fri, 19 > Jan 2007 09:42:21 -0500> To: jess-users@sandia.gov> > > On Jan 19, 2007, at > 12:00 AM, Skeptic 2000 wrote:> > >> > Hi,> >> > I have a rule looking > something like :> >> > (defrule wcooo ; exemple pour un while> > > (MyShadowfact (OBJECT ?o))> > (test (< (str-length (?o methodreturningastring > "param")) 3))> > =>> > (printout t "rulefired" (str-length (?o > methodreturningastring > > "param")) crlf))> >> > And I strangly get the > rulefired message with values like 4, 5, 6, ...> >> > Remember that > pattern-matching is driven by facts being asserted, > retracted, or modified. > In particular, the test above will be > evaluated only when the object is > first put into working memory, or > when a change event or modify call causes > it to be reevaluated. My > guess is that your method methodreturningastring > returns a value > which changes over time without Jess being notified in any > way about > the change. You will need to tell Jess when this value changes -- > for > example, by using the Rete.updateObject() method.> > > -> Ernest > Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia > National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]> > Livermore, CA 94550 http://www.jessrules.com> > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: using mathematicals functions on a shadow fact
Hi, in a LHS i'm getting a value from a shadowfact method and I want to compare that value using > to a fixed number, something like : (test (> (?x domethod "param") 3) I get the error that 3 is not a java object, so I tried to replace 3 with : new Integer 3, but I get the same message. How can I achieve this ?Thanks ! _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: < strange behavior
Hi, I have a rule looking something like : (defrule wcooo ; exemple pour un while (MyShadowfact (OBJECT ?o)) (test (< (str-length (?o methodreturningastring "param")) 3)) => (printout t "rulefired" (str-length (?o methodreturningastring "param")) crlf)) And I strangly get the rulefired message with values like 4, 5, 6, ... Can someone help ?Thanks > From: [EMAIL PROTECTED]> Subject: Re: JESS: Decorators> Date: Thu, 18 Jan > 2007 10:43:47 -0500> To: jess-users@sandia.gov> > Do the decorators actually > enlarge the API of the defclassed class? > In that case, you'll only be able > to match those additional > properties using Java method calls. Otherwise, > things would work out > fine; you could even just defclass the interface, if > that's how > things are structured. Otherwise, can you give us a concrete > example > to discuss?> > On Jan 18, 2007, at 9:17 AM, Krasnigor, Scott L > (N-AST) wrote:> > > I am curious what the implications are of defclassing a > class with > > many decorators associated with it? I need to be able to match > > > various attributes of the class that are part of the decorators. Is > > > there a correct/best way to handle this case? Any advice would be > > > appreciated. Thanks.> >> >> >> > Scott> >> >> >> >> > > -> Ernest > Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia > National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]> > Livermore, CA 94550 http://www.jessrules.com> > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
RE: JESS: calling a method on a matched shadow fact
Hi, In the LHS of a rule, could I bind to a variable a object that is returned from a method called on a matched fact ? (rule x (theShadowfact ?o) (... ?o getXYZ ... ) The purpose of doing this is to have a variable on which to do some tests without having to call getXYZ for each one of them. Thanks > From: [EMAIL PROTECTED]> Subject: Re: JESS: calling a method on a matched > shadow fact> Date: Fri, 3 Nov 2006 00:46:42 -0500> To: jess-users@sandia.gov> > > On Nov 2, 2006, at 1:29 PM, Skeptic 2000 wrote:> > > >> > Let's say I have > something like :> >> > (defclass xyz x.y.com.XYZ)> >> > (defrule "x"> > > ?x<-(xyz)> > =>> > (...)> >> > In the RHS, I would like to call a method that > is not a bean get/ > > set on the matched 'xyz', what would be the proper > way? (If > > possible, this method would take a string as argument)> >> > ?x > is a jess.Fact object; it has a slot named OBJECT containing the > actual XYZ > object. So you could say> > ((?x getSlotValue OBJECT) theMethodName "the > argument")> > Alternatively, you could bind the OBJECT slot on the LHS, and > then > you'd have a variable on which you could call the method directly.> > > -> Ernest > Friedman-Hill> Advanced Software Research Phone: (925) 294-2154> Sandia > National Labs FAX: (925) 294-2234> PO Box 969, MS 9012 [EMAIL PROTECTED]> > Livermore, CA 94550 http://www.jessrules.com> > > > To > unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'> in > the BODY of a message to [EMAIL PROTECTED], NOT to the list> (use your own > address!) List problems? Notify [EMAIL PROTECTED]> > > _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: run vs rununtilhalt
Hi, I have some java code that create ShadowFact and some rules that modify them at creation and when they are modified on the Java side. I'm trying to compare two way of doing this : First, doing a engine.runUntilHalt() and doing my java code that handle the shadowfact after. Second, after each manipulation on the Java side, doing a engine.run(). On performance side, what is the difference between the two ? You can probably guess that I want to do this because I need to be sure that Jess has runned out before doing some extra Java code. I don't want to go in details here of why I need this behavior, but I'm pretty sure that it don't go agains't the Jess spirit. Thanks _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: A problem with accumulate
Hi,I have a serious problem with accumulate, I wanted to use it on some shadow facts, but I noticed that I can't have more than one "contained CE".I would need to use a "Time-varying method" (OBJECT) and a test-CE in the matching part of the Accumulate... Something like (modifed from the manual): ?c <- (accumulate (bind ?list (new java.util.ArrayList)) (?list add ?o) ?list (employee (OBJECT ?o))(test (?o xyzMethod "arg1")) ; <- that can't work if I understand correctly :( => (printout t (?c toString) crlf)) This causes me some serious trouble, so I'll hope there is a way to deal with it. Thanks again ! _ Soyez parmi les premiers à essayer Windows Live Mail. http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
JESS: Removing a shadow fact
Let's say I have somthing like this in Java: ShadowFactClass x1 = new ShadowFactClass(); ShadowFactClass x2 = new ShadowFactClass(); ShadowFactClass x3 = new ShadowFactClass(); rete.add(x1); rete.add(x2); rete.add(x3) . Somewhere else in the code I woule like to remove from the working memory of one those three shadow facts, what would be the proper way ? (in this place, I have access both to the rete engine and the x1,x2,x3 variables) Thanks again _ Ne perdez pas de temps dans les files dÂattente magasinez en ligne. http://magasiner.sympatico.msn.ca To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: First try with backward-chaining
Hi, I tried for the first time to use backward-chaining and I can't figure out why this simple example don't work : (deftemplate x (declare (backchain-reactive TRUE)) (slot a) (slot b) ) (defrule printX (x (b 12)) => (printout t "yeah!") ) (defrule createX (need-x (b ?y)) => (assert (x (a 3) (b ?y))) ) (run) Thanks ! _ Ne perdez pas de temps dans les files dÂattente magasinez en ligne. http://magasiner.sympatico.msn.ca To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: calling a method on a matched shadow fact
Hi,
Let's say I have something like :
(defclass xyz x.y.com.XYZ)
(defrule "x"
?x<-(xyz)
=>
(...)
In the RHS, I would like to call a method that is not a bean get/set on the
matched 'xyz', what would be the proper way? (If possible, this method would
take a string as argument)
Thanks,
JFL
From: "Ernest Friedman-Hill" <[EMAIL PROTECTED]>
Reply-To: jess-users@sandia.gov
To: jess-users@sandia.gov
Subject: Re: JESS: Symplified syntax jess 7
Date: Thu, 2 Nov 2006 13:03:08 -0500
Only simple expressions as described in the manual are handled in this
release. Parenthesized expressions are not implemented -- yet.
On Nov 2, 2006, at 5:36 AM, Negoita, Cristian wrote:
The simplified rule should look like below:
(defrule Rule-KDF-BDF-Promo-1
(Input
{bestandFirma <> 5 && ((promotionalCode ==
'M' || promotionalCode == 'X') && kontoFirma == 5)}
)
=>...
But his expression cannot be parsed by Jess.
-
Ernest Friedman-Hill
Advanced Software Research Phone: (925) 294-2154
Sandia National LabsFAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://www.jessrules.com
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the list
(use your own address!) List problems? Notify [EMAIL PROTECTED]
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JESS: adding (not creating) rules from Java
Hi, I want to have a Java program that can add rules to a Rete object at runtime. The rules would be entered as a String and once added, I would need a way to refer to them on the Java side. What would be the proper way to do it ? Thanks, JFL _ Achetez ce que vous voulez, quand vous voulez sur Sympatico / MSN Magasiner http://magasiner.sympatico.msn.ca/content/shp/?ctId=101,ptnrid=176,ptnrdata=081805 To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Test on a list from a JavaBean
Oops, I was about to reply saying "forget it, it's from the Java's API". In fact, now that I understand that I can call any java method from the matching facts, all my problems should be solved. Thanks again, JFL From: "Ernest Friedman-Hill" <[EMAIL PROTECTED]> Reply-To: jess-users@sandia.gov To: jess-users@sandia.gov Subject: Re: JESS: Test on a list from a JavaBean Date: Tue, 24 Oct 2006 22:09:34 -0400 On Oct 24, 2006, at 8:14 PM, Skeptic 2000 wrote: Thanks, I missed the contains, it's not in the Jess functions list, where it comes from ? It's a method in the java.util.Collections interface, yes? We're calling it on ?theList, which is a java.util.List. From: "Ernest Friedman-Hill" <[EMAIL PROTECTED]> Something like this? (defrule theRule (theFact (theProperty ?theList&:(?theList contains "xyz"))) => ... On Oct 24, 2006, at 2:15 PM, Skeptic 2000 wrote: Hi, In my rules, I need to tests some shadows fact which have as one of their properties a List. For example, let's say it's a List of String and I my test is to check that the string "xyz" is part of the list. What would be the most proper way to do this ? - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://www.jessrules.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] _ Voyez vos amis en faisant un appel vidèo dans Windows Live Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=fr-ca To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: Test on a list from a JavaBean
Thanks, I missed the contains, it's not in the Jess functions list, where it comes from ? JFL From: "Ernest Friedman-Hill" <[EMAIL PROTECTED]> Reply-To: jess-users@sandia.gov To: jess-users@sandia.gov Subject: Re: JESS: Test on a list from a JavaBean Date: Tue, 24 Oct 2006 15:13:30 -0400 Something like this? (defrule theRule (theFact (theProperty ?theList&:(?theList contains "xyz"))) => ... On Oct 24, 2006, at 2:15 PM, Skeptic 2000 wrote: Hi, In my rules, I need to tests some shadows fact which have as one of their properties a List. For example, let's say it's a List of String and I my test is to check that the string "xyz" is part of the list. What would be the most proper way to do this ? - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://www.jessrules.com To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] _ Découvrez Live Search de votre PC ou de votre appareil mobile dès aujourdÃÂhui. http://www.live.com/?mkt=fr-ca To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: Test on a list from a JavaBean
Hi, In my rules, I need to tests some shadows fact which have as one of their properties a List. For example, let's say it's a List of String and I my test is to check that the string "xyz" is part of the list. What would be the most proper way to do this ? Thanks, JFL _ Essayez la nouvelle génération de recherche avec Live Search. http://www.live.com/?mkt=fr-ca To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: Function in LHS
Reading the Zen of Jess on the Wiki, I spoted that one : "Anger - Calling functions on LHS of a rule Anger is what Dr. Friedman-Hill will choke back when you put (> 3.1415 x) on left-hand side (LHS) of a rule and then you ask," What went wrong?" Once you start coding, understand that with very few exceptions, the LHS of a rule is reserved for patterns only. Function calls are (typically) the actions that happen when patterns are matched. They go on the right-hand side (RHS) of rules only. " I currently use function in my Jess rules (for classification purpose) and I really don't see why it's a problem ? For example, I use evenp/oddp to classify some facts according to one of their slots. Thanks, JFL To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: Detecting rules inconsistencies
Hi, I'm currently using Jess as a kind of classifier, and I'm asking myself if some mechanisms exist to detect inconsequent or impossible rules. A simple example would be a rule testing a slot value being > 10 and < 10. Thanks. JF To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: asserting a fact from another
Yeah, that's better than slot-values, but I was hoping for something specific to extended template, thanks anyway :) Two others questions, 1) Since there is no multiple inheritance (extends can be done only on one fact), what would be the best way to create this : A has two slots, X, Y B has one slot Z C would have X, Y, Z. (Of course, the simple answer is to create C with those 3 slot). 2) One of the first thing I tried to do was to put a fact-id in a slot. (To act as a kind of pointer from a fact to another one without using an integer ID like in a relational database). However, I never saw a exemple in the documention doing it, or nothing saying "that's good" or "that's bad". So, I would like to know if there is some problems with it ? Thanks again. Jean-François From: "friedman_hill ernest j" <[EMAIL PROTECTED]> Reply-To: jess-users@sandia.gov To: jess-users@sandia.gov Subject: Re: JESS: asserting a fact from another Date: Sat, 26 Aug 2006 18:08:15 -0700 (PDT) You can just bind the values to variables on the rule's LHS, right? (defrule example (A (x ?x) (y ?y)) => (assert (B (x ?x) (y ?y) (z someValue If A and B weren't different templates, you could use the underappreciated "duplicate" function, but you can't. I think Skeptic 2000 wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] > > Hi, > > Let's say I have a deftemplate A with two slot : x, and y. > > I have another deftemplate B whom extends A, adding slot z. > > Then I have a rule that checks for any A-fact with special values for x and > or y. > > If the rule fire, I want to create a B fact with the same values as in the A > fact (and a value for z of course). > > I know that I can use fact-slot-value to get the A-fact values, but is there > a cleaner way ? > > Thanks. > > Jean-Francois > > To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' > in the BODY of a message to [EMAIL PROTECTED], NOT to the list > (use your own address!) List problems? Notify [EMAIL PROTECTED] > > - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: asserting a fact from another
Hi, Let's say I have a deftemplate A with two slot : x, and y. I have another deftemplate B whom extends A, adding slot z. Then I have a rule that checks for any A-fact with special values for x and or y. If the rule fire, I want to create a B fact with the same values as in the A fact (and a value for z of course). I know that I can use fact-slot-value to get the A-fact values, but is there a cleaner way ? Thanks. Jean-Francois To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: Java objects to working memory
Hi, I'm using Jess in a multi-agent software where I have to transfer the content of the received messages from the Java code handling the communication process to Jess that handle the reasoning process. I took a look at the different way to do it (JavaBeans, aserting facts and the store/fetch). I want the transfer to be fast as possible, so which method should I use ? (JavaBean seems to be the most simple one... but at which cost?)Thanks for help. Votre nouvelle utilisation de la messagerie : Windows Live Messenger Beta
Re: JESS: forall
Thanks, Another one, if I have a fact in a variable like the goal in the last example in variable ?g. If I use this variable as a function paramater, in the function how I can get access to its slot values ? In a Java user function I can use the .getSlotValue, but in a Jess user function, how I can do it ? (For example, let say I would like to do my (modify ?g (state sucess)) in a user function) Thanks again. From: [EMAIL PROTECTED] Reply-To: jess-users@sandia.gov To: jess-users@sandia.gov Subject: Re: JESS: forall Date: Sat, 22 Apr 2006 12:50:31 -0700 (PDT) The "forall" CE (forall (A) (B)) says that for every A, B matches. For example ;; Everyone owns a dog (forall (person (name ?n)) (dog (owner ?n))) You're saying something different: given a goal X in state nil, if every goal Y is in state success, then modify goal X. You could write something like ; Given goal X ?g<- (goal (name "X") (state nil)) ;; There's at least one goal "Y" (exists (goal (name "Y"))) ;; All goals "Y" are in state success (not (goal (name "Y") (state ~success))) If there's always a goal "Y", you can omit the middle pattern. I think Skeptic 2000 wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] > > Hi, > > I tried to use the forall in this way and it doesn't work, it's a bug or I > misunderstand how it is supposed to work ? > > I have a deftemplate name goal with two slot, name and state. > > My rule is : > > (defrule example > ?g<- (goal (name "X") (state nil)) > (forall (goal (name "Y") (state sucess)) > => > (modify ?g (state sucess) > > In a few words, I put the goal "X" is in state sucess if every goal "Y" are > in state sucess. > > Problem is that the 'sucess' criteria seems to not considered by the forall > CE. > > Thanks for help. > > > To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' > in the BODY of a message to [EMAIL PROTECTED], NOT to the list > (use your own address!) List problems? Notify [EMAIL PROTECTED] > > - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: forall
Hi, I tried to use the forall in this way and it doesn't work, it's a bug or I misunderstand how it is supposed to work ? I have a deftemplate name goal with two slot, name and state. My rule is : (defrule example ?g<- (goal (name "X") (state nil)) (forall (goal (name "Y") (state sucess)) => (modify ?g (state sucess) In a few words, I put the goal "X" is in state sucess if every goal "Y" are in state sucess. Problem is that the 'sucess' criteria seems to not considered by the forall CE. Thanks for help. To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: JessML, java API
Hi, Why a DTD is used for JessML instead of a Schema? Legacy issue? Are efforts to improve the tools available to create defrules from Java planned for a "near-future? In fact, I need the tools to enable me to inspect the .clp/jessML content from a higher level stand point and take decisions based on the content of the different constructs (deftemplates/defrules). This higher level decision process could even be implanted in Jess To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
Re: JESS: depth vs breadth
Hi,
Now you have at least one "user request" about changing the visibility of
these methods in the next version. If needed, I can explain in a private
message why I need this level of control over the firing order. (No, Im not
falling in the trap of trying to make Jess to behave in a procedural way)
From: [EMAIL PROTECTED]
Reply-To: jess-users@sandia.gov
To: jess-users@sandia.gov
Subject: Re: JESS: depth vs breadth
Date: Sat, 15 Apr 2006 13:26:25 -0700 (PDT)
I think Skeptic 2000 wrote:
[Charset iso-8859-1 unsupported, filtering to ASCII...]
>
> Oh, now I feel bad, but I was in the "Java mindset", can it be done with
the
> SetStrategy method?
Yes, you could use the Rete.setStrategy() method, if you had an
instance of the class you wanted Jess to use; but the ones that
implement depth and breadth aren't actually public, so in practice you
can only do this with your own implementations.
Just say (Jess 7)
Rete engine = ...
engine.eval("(set-strategy breadth)");
In Jess 6, you have to use "executeCommand()" instead of "eval()".
>
> A new question : the descripton of the two defaults strategy talk about
> choosing the rule according to the order in which they have been
activated.
> But when we implement Strategy, we must compare two Activation object
and I
> don't see a method that give us a way to know which one is the more
recent.
The needed methods in the Token class are not public. There's actually
a comment in the Jess 7 source wondering whether they should be made
so; perhaps they should.
The Fact class has a public getTime() method, which see; it returns a
number related to the recency of the fact's last modification.
-
Ernest Friedman-Hill
Advanced Software Research Phone: (925) 294-2154
Sandia National LabsFAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://herzberg.ca.sandia.gov
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the list
(use your own address!) List problems? Notify [EMAIL PROTECTED]
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Re: JESS: depth vs breadth
Oh, now I feel bad, but I was in the "Java mindset", can it be done with the SetStrategy method? A new question : the descripton of the two defaults strategy talk about choosing the rule according to the order in which they have been activated. But when we implement Strategy, we must compare two Activation object and I don't see a method that give us a way to know which one is the more recent. Thanks again. From: [EMAIL PROTECTED] Reply-To: jess-users@sandia.gov To: jess-users@sandia.gov Subject: Re: JESS: depth vs breadth Date: Sat, 15 Apr 2006 10:59:39 -0700 (PDT) I think Skeptic 2000 wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] > > Hi, > > In the doc, it is explain that Jess come with a default depth strategy and > an optional breadth one, how you can switch the Rete engine to the breadth > one? (I know I can make my own Strategy class). http://www.jessrules.com/jess/docs/61/functions.html#set-strategy - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: depth vs breadth
Hi, In the doc, it is explain that Jess come with a default depth strategy and an optional breadth one, how you can switch the Rete engine to the breadth one? (I know I can make my own Strategy class). Thanks for help. To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
JESS: Using Jess in madkit
Hi, With the lack of support from the Madkit group, I hope there is someone here who already tried to use a Jess Agent in Madkit. I have a very small technical problem, when I create my JessAgent with Java code, Madkit try to load a .clp file but with a wrong path : Error opening file null\plugins/jesslib/scripts/madkitlib.clp That "null" should be the Madkit directory in fact, but no where in their doc they talk about seting up a path for using a JessAgent. If someone can help, thanks a lot. JF To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED]
