jason-users Mailing List for jason

Hi Alejandro,

That's an interesting question. We have discussed this and found that =20=

it's not normally necessary to do that. If you are programming in =20
declarative-goal style, if a plan for +!ev suceeds, the agent will =20
come to believe ev, so an event +ev will be generated, and you could =20
create plans to do something when this happens. If you have plans =20
where goals are not being seen declaratively, you could add a new =20
goal "!finished" at the end of the plans for +!ev. Alternatively, in =20
the plan body where !ev appear you could change that to have !=20
achieveAndEndWithEvent(ev) then have a plan:

+!achieveAndEndWithEvent(AnyGoal) : true <- !AnyGoal; !finished=20
(AnyGoal).

and then you can write the plan you wanted for the event of a plan =20
finishing:

+!finished(AnyGoal) : true <- .print("I finished a plan for:",AnyGoal).

If you have downloaded Jason 0.9.3 you could also try to use patterns =20=

(as discussed in a DALT-2006 paper) to do this. This might be a =20
neater way of doing what you want, but at the moment this would =20
involve you changing the Jason source code.

Hope this helps,

Rafael


On 10 Oct 2006, at 00:59, Alejandro Guerra-Hern=E1ndez wrote:

> Hi,
>
> I know that every time a plan associated to the event +! ev fails, =20
> an event -! ev is produced. Is there any event being posted when =20
> the plan succeeds? a kind of done(ev)? Thanks in advance
>
> Dr. Alejandro Guerra Hern=E1ndez
>
> SNI - candidato
>
> Universidad Veracruzana
> Facultad de F=EDsica e Inteligencia Artificial
> Departamento de Inteligencia Artificial
> Sebasti=E1n Camacho No. 5
> Xalapa, Ver., M=E9xico 91000
> Tel.  (+52) 228 817-29-57
> Fax. (+52) 228 817-28-55
>
> www.uv.mx/aguerra
>
>
>
> ----------------------------------------------------------------------=20=

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The Jason 0.9.3 has been released and is available at

http://sourceforge.net/project/showfiles.php?group_id=98417

This version fixes some bugs in the previous version and adds the
following main new features:

. an event +!idle is generated when the agent has nothing to do
   (no other event, no intention, no message, ....)

. New commands: asl2html and asl2tex, to translate ASL sources to
   html and LaTeX

. We add some useful classes to develop grid based environments.
   There is a class to model (maintain the data) the scenario and
   another class to draw it in the screen. The examples CleaningRobots,
   DomesticRobot, and Gold-Miners use these classes. More information
   is available in these examples and in the API of package
   import jason.environment.grid

. goal patterns as proposed in DALT 2006 paper:
   . Backtracking Declarative Goal
   . Blind Commitment Goal
   . Open-Minded Commitment
   . Maintenance Goal
   . Relativised Commitment Goal
   . and others

New examples
. Sniffer: shows how to get all messages sent by the agents.
. ContractNetProtocol: shot how the CNP may be implemented with Jason


Changes in the communication
. performative ask is changed to askOne
. send ask can have an 5th parameter: timeout.
   E.g. .send(ag,askOne,vl(X),Answer,3000)
   will wait the answer for 3 seconds. If ag will not respond,
   Answer will unify with "timeout".
. The interface of internal actions also changed (see release notes
   for details)


Best regards,

Jomi & Rafael

Hi,

I know that every time a plan associated to the event +! ev fails, an =20=

event -! ev is produced. Is there any event being posted when the =20
plan succeeds? a kind of done(ev)? Thanks in advance

Dr. Alejandro Guerra Hern=E1ndez

SNI - candidato

Universidad Veracruzana
Facultad de F=EDsica e Inteligencia Artificial
Departamento de Inteligencia Artificial
Sebasti=E1n Camacho No. 5
Xalapa, Ver., M=E9xico 91000
Tel.  (+52) 228 817-29-57
Fax. (+52) 228 817-28-55

www.uv.mx/aguerra

Hi,

Although Jason does not support message sniffing in the current  
version, it supports mind sniffing. So, each cycle, a monitor agent  
can ask the "minds" (beliefs, intentions, ...) of the others. The  
debugger available with Jason is indeed such a kind of agent, each  
cycle it ask the selected agent a copy of its mind and display it  
HTML. The snapshot of the mind is in XML format.

If you intended to develop this monitor, see the code of the class  
src/jason/control/ExecutionControlGUI.java which implements the  
debugger and how to set customised controller at
	 http://jason.sourceforge.net/faq/faq.html#sec:controlclass

Regards,

Jomi

Dear Guillermo,

Jason itself does not provide any resource to sniff messages, this =20
issue is delegated to the underlying infrastructure. The current =20
version of Jason has two infrastructures: Centralised and Saci. The =20
first does not support sniff yet, but Saci supports. So we can write =20
a customised agent architecture for some Jason agent and this =20
architecture announce itself as a monitor and therefore all agents =20
notify it about messages.

I wrote a very simple example of how to develop such an architecture =20
an integrate it in a Jason system, it is available at

	http://www.inf.furb.br/~jomi/download/Sniffer.zip

Regards,

Jomi

On 4/out/2006, at 09:45, GUILLERMO ANTONIO VIGUERAS GONZALEZ wrote:

> Hello, I'm a researcher in MultiAgents Systems (MAS) and I would like
> to test Jason. But I need to sniff the messages sent by agents in the
> MAS, so, are there any method to sniff messages? For example in a FIPA
> compliant platform exists an 'AMS agent', and the programer can
> subscribe to the AMS agent to receive events like 'New agent created'
> and 'message sent'. Are there something similar in JASON? or which is
> the method? Thank you very much. Regards.
>
>     Guillermo.
>
> ----------------------------------------------------------------------=20=

> ---
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to =20
> share your
> opinions on IT & business topics through brief surveys -- and earn =20
> cash
> http://www.techsay.com/default.php?=20
> page=3Djoin.php&p=3Dsourceforge&CID=3DDEVDEV
> _______________________________________________
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> Jas...@li...
> https://lists.sourceforge.net/lists/listinfo/jason-users

WYSIWYG: what you see is all that you get
LaTeX: what you get is more than you see
--=20
Jomi F. H=FCbner
Universidade Regional de Blumenau - FURB
Departamento de Sistemas e Computa=E7=E3o - DSC
Campus IV, rua Braz Wanka, 238, Vila Nova
89035-160, Blumenau, SC
mailto:jo...@in...
http://www.inf.furb.br/~jomi
Tel: +55(47)3321-7810  Fax: +55(47)3321-7802

Hello, I'm a researcher in MultiAgents Systems (MAS) and I would like 
to test Jason. But I need to sniff the messages sent by agents in the 
MAS, so, are there any method to sniff messages? For example in a FIPA 
compliant platform exists an 'AMS agent', and the programer can 
subscribe to the AMS agent to receive events like 'New agent created' 
and 'message sent'. Are there something similar in JASON? or which is 
the method? Thank you very much. Regards.

    Guillermo.