I'm interested in this topic too. I'm Drools contributor about a year now, do you think that I can help with your ideas? and also with the development? 2009/8/22 Russ Abbott <russ.abbott(a)gmail.com&gt; > > Hi, > > I'm interested in developing (if it doesn't already exist) and then using > a framework for agent-based modeling in which the agents are rule driven. An > important feature is that the agents and their rules must be dyanically > manipulable. That is, both the agents and the rules must be first class > objects that can be manipulated as the system is running. Can Drools support > that? > > As someone not familiar with Drools I did my best to find out by looking > at the Drools Expert User's Manual<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/a...;. > From what I could tell, the Template feature<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/... which one uses Java objects as Template data sources comes close. I'd > like your advice before putting too much development effort into attempting > to use it for that purpose. > > In particular, would it be possible to set up a mechanism that could: > create and delete agents on the fly; associate rule sets with agents on the > fly; and modify the rules associated with an agent on the fly? After each > such action the system would change to reflect the change in agents and > rules. > > Thanks for your help. > > -- Russ Abbott > > P.S. If Drools would not be a good choice, is there some other system that > you could recommend? > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -

From: Russ Abbott <russ.abbott(a)gmail.com&gt; Subject: [rules-users] Using Drools for modeling with rule-driven agents To: rules-users(a)lists.jboss.org Cc: "Antony W. Iorio" <antony.iorio(a)gmail.com&gt;, "Abbass, Hussein" <h.abbass(a)adfa.edu.au&gt; Date: Saturday, August 22, 2009, 5:52 PM Hi, I'm interested in developing (if it doesn't already exist) and then using a framework for agent-based modeling in which the agents are rule driven. An important feature is that the agents and their rules must be dyanically manipulable. That is, both the agents and the rules must be first class objects that can be manipulated as the system is running. Can Drools support that? As someone not familiar with Drools I did my best to find out by looking at the Drools Expert User's Manual. From what I could tell, the Template feature in which one uses Java objects as Template data sources comes close.  I'd like your advice before putting too much development effort into attempting to use it for that purpose. In particular, would it be possible to set up a mechanism that could: create and delete agents on the fly; associate rule sets with agents on the fly; and modify the rules associated with an agent on the fly?  After each such action the system would change to reflect the change in agents and rules. Thanks for your help. -- Russ Abbott P.S. If Drools would not be a good choice, is there some other system that you could recommend? -----Inline Attachment Follows----- _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

This wouldn't happen to involve evolutionary pressures altering rules, would it? --- On Sat, 8/22/09, Russ Abbott <russ.abbott(a)gmail.com&gt; wrote: > From: Russ Abbott <russ.abbott(a)gmail.com&gt; > Subject: [rules-users] Using Drools for modeling with rule-driven agents > To: rules-users(a)lists.jboss.org > Cc: "Antony W. Iorio" <antony.iorio(a)gmail.com&gt;, "Abbass, Hussein" < h.abbass(a)adfa.edu.au&gt; > Date: Saturday, August 22, 2009, 5:52 PM > > Hi, > > I'm interested in developing (if it doesn't already > exist) and then using a framework for agent-based modeling > in which the agents are rule driven. An important feature is > that the agents and their rules must be dyanically > manipulable. That is, both the agents and the rules must be > first class objects that can be manipulated as the system is > running. Can Drools support that? > > > > > As someone not familiar with Drools I did my best to find > out by looking at the Drools > Expert User's Manual. From what I could tell, the Template > feature in which one uses Java objects as Template data > sources comes close. I'd like your advice before > putting too much development effort into attempting to use > it for that purpose. > > > > > In particular, would it be possible to set up a mechanism > that could: create and delete agents on the fly; associate > rule sets with agents on the fly; and modify the rules > associated with an agent on the fly? After each such > action the system would change to reflect the change in > agents and rules. > > > > > Thanks for your help. > > -- Russ Abbott > > P.S. If Drools would not be a good choice, is there some > other system that you could recommend? > > > > > -----Inline Attachment Follows----- > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >

Yes, rules can be manipulated at runtime. The class org.drools.RuleBase has methods for adding Packages and removing Packages and individual rules, and can be called at runtime as demonstrated by Mark in this jira post: https://jira.jboss.org/jira/browse/JBRULES-1431 I haven't tried it myself, but now that the subject has come up I probably will. :) As for the best approach to do this, I'd suggest that you have your own rule representation that generates DRL, then compile that DRL in the standard way using the PackageBuilder. On first blush it may seem best or more elegant to try creating Rule objects directly, circumventing the PackageBuilder, but that's a waste of time in my opinion. (The main focus for support from the drools team is the language and other "external" parts of the system.) So, how will agents interact in your system? Will each have it's own rete network? Or will several agents share a rete? --- On Sat, 8/22/09, Russ Abbott <russ.abbott(a)gmail.com&gt; wrote: > From: Russ Abbott <russ.abbott(a)gmail.com&gt; > Subject: Re: [rules-users] Using Drools for modeling with rule-driven agents > To: "Greg Barton" <greg_barton(a)yahoo.com&gt; > Cc: rules-users(a)lists.jboss.org, "Antony W. Iorio" < antony.iorio(a)gmail.com&gt;, "HusseinAbbass" <h.abbass(a)adfa.edu.au&gt; > Date: Saturday, August 22, 2009, 10:15 PM > That's a possibility. But the > underlying capability comes first. Can we do it in Drools? > Has anyone done it, and if so would you be willing to share > your experience? > > -- Russ > > > > On Sat, Aug 22, 2009 at 6:50 PM, > Greg Barton <greg_barton(a)yahoo.com&gt; > wrote: > > > This wouldn't happen to involve evolutionary pressures > altering rules, would it? > > > > --- On Sat, 8/22/09, Russ Abbott <russ.abbott(a)gmail.com&gt; > wrote: > > > > > From: Russ Abbott <russ.abbott(a)gmail.com&gt; > > > Subject: [rules-users] Using Drools for modeling with > rule-driven agents > > > To: rules-users(a)lists.jboss.org > > > Cc: "Antony W. Iorio" <antony.iorio(a)gmail.com&gt;, > "Abbass, Hussein" <h.abbass(a)adfa.edu.au&gt; > > > Date: Saturday, August 22, 2009, 5:52 PM > > > > > > Hi, > > > > > > I'm interested in developing (if it doesn't > already > > > exist) and then using a framework for agent-based > modeling > > > in which the agents are rule driven. An important > feature is > > > that the agents and their rules must be dyanically > > > manipulable. That is, both the agents and the rules > must be > > > first class objects that can be manipulated as the > system is > > > running. Can Drools support that? > > > > > > > > > > > > > > > As someone not familiar with Drools I did my best to > find > > > out by looking at the Drools > > > Expert User's Manual. From what I could tell, the > Template > > > feature in which one uses Java objects as Template > data > > > sources comes close. I'd like your advice > before > > > putting too much development effort into attempting to > use > > > it for that purpose. > > > > > > > > > > > > > > > In particular, would it be possible to set up a > mechanism > > > that could: create and delete agents on the fly; > associate > > > rule sets with agents on the fly; and modify the > rules > > > associated with an agent on the fly? After each > such > > > action the system would change to reflect the change > in > > > agents and rules. > > > > > > > > > > > > > > > Thanks for your help. > > > > > > -- Russ Abbott > > > > > > P.S. If Drools would not be a good choice, is there > some > > > other system that you could recommend? > > > > > > > > > > > > > > > -----Inline Attachment Follows----- > > > > > > _______________________________________________ > > > rules-users mailing list > > > rules-users(a)lists.jboss.org > > > https://lists.jboss.org/mailman/listinfo/rules-users > > > > > > > > > > > > >

From: Mauricio Salatino <salaboy(a)gmail.com&gt; Subject: Re: [rules-users] Using Drools for modeling with rule-driven agents To: Russ.Abbott(a)gmail.com, "Rules Users List" <rules-users(a)lists.jboss.org&gt; Cc: "Greg Barton" <greg_barton(a)yahoo.com&gt;, "HusseinAbbass" <h.abbass(a)adfa.edu.au&gt;, "Antony W. Iorio" <antony.iorio(a)gmail.com&gt; Date: Sunday, August 23, 2009, 12:16 AM Seems that each agent will have a session created based on different knowledge that can be dinamically modified. 2009/8/22 Russ Abbott <russ.abbott(a)gmail.com&gt; Thanks Greg, That sounds quite promising.  I've never used Drools and can't say how the Rete network will be organized. In fact, before your message I wasn't aware that Drools allows multiple Rete networks. If that's the case it seems to make a lot of sense for each agent to have its own. Since the agents are supposed to be individual and disjoint I was imagining that I'd have to code an agent's id into its rules to limit those rules from being applied to other agents. But multiple Rete networks sounds much much better!  It would be even better if each agent could run its rules asynchronously in its own thread. Is something like that possible: multiple threads of rule evaluators running on a single workspace? -- Russ On Sat, Aug 22, 2009 at 9:26 PM, Greg Barton <greg_barton(a)yahoo.com&gt; wrote: Yes, rules can be manipulated at runtime.  The class org.drools.RuleBase has methods for adding Packages and removing Packages and individual rules, and can be called at runtime as demonstrated by Mark in this jira post: https://jira.jboss.org/jira/browse/JBRULES-1431 I haven't tried it myself, but now that the subject has come up I probably will. :) As for the best approach to do this, I'd suggest that you have your own rule representation that generates DRL, then compile that DRL in the standard way using the PackageBuilder.  On first blush it may seem best or more elegant to try creating Rule objects directly, circumventing the PackageBuilder, but that's a waste of time in my opinion. (The main focus for support from the drools team is the language and other "external" parts of the system.) So, how will agents interact in your system?  Will each have it's own rete network?  Or will several agents share a rete? --- On Sat, 8/22/09, Russ Abbott <russ.abbott(a)gmail.com&gt; wrote: > From: Russ Abbott <russ.abbott(a)gmail.com&gt; > Subject: Re: [rules-users] Using Drools for modeling with rule-driven agents > To: "Greg Barton" <greg_barton(a)yahoo.com&gt; > Cc: rules-users(a)lists.jboss.org, "Antony W. Iorio" <antony.iorio(a)gmail.com&gt;, "HusseinAbbass" <h.abbass(a)adfa.edu.au&gt; > Date: Saturday, August 22, 2009, 10:15 PM > That's a possibility. But the > underlying capability comes first. Can we do it in Drools? > Has anyone done it, and if so would you be willing to share > your experience? > > -- Russ > > > > On Sat, Aug 22, 2009 at 6:50 PM, > Greg Barton <greg_barton(a)yahoo.com&gt; > wrote: > > > This wouldn't happen to involve evolutionary pressures > altering rules, would it? > > > > --- On Sat, 8/22/09, Russ Abbott <russ.abbott(a)gmail.com&gt; > wrote: > > > > > From: Russ Abbott <russ.abbott(a)gmail.com&gt; > > > Subject: [rules-users] Using Drools for modeling with > rule-driven agents > > > To: rules-users(a)lists.jboss.org > > > Cc: "Antony W. Iorio" <antony.iorio(a)gmail.com&gt;, > "Abbass, Hussein" <h.abbass(a)adfa.edu.au&gt; > > > Date: Saturday, August 22, 2009, 5:52 PM > > > > > > Hi, > > > > > > I'm interested in developing (if it doesn't > already > > > exist) and then using a framework for agent-based > modeling > > > in which the agents are rule driven. An important > feature is > > > that the agents and their rules must be dyanically > > > manipulable. That is, both the agents and the rules > must be > > > first class objects that can be manipulated as the > system is > > > running. Can Drools support that? > > > > > > > > > > > > > > > As someone not familiar with Drools I did my best to > find > > > out by looking at the Drools > > > Expert User's Manual. From what I could tell, the > Template > > > feature in which one uses Java objects as Template > data > > > sources comes close.  I'd like your advice > before > > > putting too much development effort into attempting to > use > > > it for that purpose. > > > > > > > > > > > > > > > In particular, would it be possible to set up a > mechanism > > > that could: create and delete agents on the fly; > associate > > > rule sets with agents on the fly; and modify the > rules > > > associated with an agent on the fly?  After each > such > > > action the system would change to reflect the change > in > > > agents and rules. > > > > > > > > > > > > > > > Thanks for your help. > > > > > > -- Russ Abbott > > > > > > P.S. If Drools would not be a good choice, is there > some > > > other system that you could recommend? > > > > > > > > > > > > > > > -----Inline Attachment Follows----- > > > > > > _______________________________________________ > > > rules-users mailing list > > > rules-users(a)lists.jboss.org > > > https://lists.jboss.org/mailman/listinfo/rules-users > > > > > > > > > > > > > _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- - http://salaboy.wordpress.com - http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -

Hi, I'm interested in developing (if it doesn't already exist) and then using a framework for agent-based modeling in which the agents are rule driven. An important feature is that the agents and their rules must be dyanically manipulable. That is, both the agents and the rules must be first class objects that can be manipulated as the system is running. Can Drools support that? As someone not familiar with Drools I did my best to find out by looking at the Drools Expert User's Manual <http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/tr...;. From what I could tell, the Template feature <http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/tr... in which one uses Java objects as Template data sources comes close. I'd like your advice before putting too much development effort into attempting to use it for that purpose. In particular, would it be possible to set up a mechanism that could: create and delete agents on the fly; associate rule sets with agents on the fly; and modify the rules associated with an agent on the fly? After each such action the system would change to reflect the change in agents and rules.

Thanks for your help. -- Russ Abbott P.S. If Drools would not be a good choice, is there some other system that you could recommend? ------------------------------------------------------------------------ _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users