[rules-users] Using Drools for modeling with rule-driven agents

[Mauricio Salatino]

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 at gmail.com>

> 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 at yahoo.com>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 at gmail.com> wrote:
>>
>> > From: Russ Abbott <russ.abbott at gmail.com>
>> > Subject: Re: [rules-users] Using Drools for modeling with rule-driven
>> agents
>> > To: "Greg Barton" <greg_barton at yahoo.com>
>> > Cc: rules-users at lists.jboss.org, "Antony W. Iorio" <
>> antony.iorio at gmail.com>, "HusseinAbbass" <h.abbass at adfa.edu.au>
>> > 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 at yahoo.com>
>> > wrote:
>> >
>> >
>> > This wouldn't happen to involve evolutionary pressures
>> > altering rules, would it?
>> >
>> >
>> >
>> > --- On Sat, 8/22/09, Russ Abbott <russ.abbott at gmail.com>
>> > wrote:
>> >
>> >
>> >
>> > > From: Russ Abbott <russ.abbott at gmail.com>
>> >
>> > > Subject: [rules-users] Using Drools for modeling with
>> > rule-driven agents
>> >
>> > > To: rules-users at lists.jboss.org
>> >
>> > > Cc: "Antony W. Iorio" <antony.iorio at gmail.com>,
>> > "Abbass, Hussein" <h.abbass at adfa.edu.au>
>> >
>> > > 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 at lists.jboss.org
>> >
>> > > https://lists.jboss.org/mailman/listinfo/rules-users
>> >
>> > >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>>
>>
>>
>>
>
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