Dear Mohsen,
I agree with your opinion "teams should not heavily rely on communication"
but we need to cooperate with new changes in rescue 0.44. Rescue 0.44 uses
random object IDs which is 9 bytes long while object IDs in old rescue is
1-4 bytes.
I think the majority of messages need carry object IDs and 80 bytes may be
too limited for new 9-byte object IDs.
Some teams may pack IDs into binaries to handle the limitation. It just
increases the programming complexity without tackling the key issues of
communication.
One goal of rescue simulation, in my opionin, is to simulate the real rescue
situation. We need to discuss which way is more realistic and popular in
real rescue communication situation, very short messages (such as 80 bytes)
or relatively long messges (such as 256 bytes)? For my understanding, the
maximum length of one message is not important as long as the technical
committe or every team agrees that a simulation team uses RATIONAL and
REALISTIC messages.
best regards,
zijian ren
phoenix team
----- Original Message -----
From: "Mohsen Izadi" <roboresc_mi@yahoo.com>
To: <r-resc-l@usc.edu>
Sent: Saturday, February 21, 2004 9:08 AM
Subject: Message Length Limitation
> Dear Friends,
> We recently noticed that maximum length
> of TELL and SAY messages is set to 256
> bytes for 2004 competitions.
>
> Regarding to our experiences in 2003
> competitions, we thought that a limit
> of 80 bytes is not restrictive. In other
> words we found it both restrictive
> enough (Making teams not rely totally on
> communication for cooperation) and open
> enough (Not limiting the flow of AI ideas
> utilizing message-passing between agents).
>
> As most of you remember there were some
> discussions about the restrictions on
> messages before 2002 and 2003 competitions
> and as a result of these discussions and
> a voting from teams we used a limit of 80
> bytes in 2003 competitions(Among some more
> restrictive proposals like 12kkId).
>
> Now, Our question is why is it again reset
> to 256 bytes by Technical Committee? We're
> afraid it will result in strategies heavily
> based on centralized decision-making, which
> is against Multi-agent spirit of RoboCup
> competitions.
>
> Regards,
> Mohsen Izadi,
> S.O.S. Member
>
>
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