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Re: How complex an agent?
From: |
donalson |
Subject: |
Re: How complex an agent? |
Date: |
Tue, 10 Nov 1998 19:00:58 -0800 |
If you want to be able to work back from a simulation result to components of
contributing dynamics, then you really need very simple agents to go with your
complex
ones. For example, I am working with a spatial metapopulation model. The goal
of the
research is to understand the dynamics in a host/parasitoid system where the
inside of
the tree provides a partial refuge for the prey. I started with a Delay
Differential
Equation Model that allows me to test a "well-mixed" version of the spatial
model
against a mathmatical result. This really helps with debugging. My next model
is a
stochastic birth/death version of the DDE model which allowed testing of
effects of
demographic stochasticity in the absence of space. I am at present testing the
spatial model in the absence of any refuge. This turned out to be quite
important
because within the parameter space I in which I am working, there are very
strong
spatial effects, even without a spatial refuge. Without the previous step, if
I ever
get to the refuge gradient (sigh...), I would not have known that that there
were
underlying spatial dynamics involved, seperate from the refuge.
I have to say, this is like trying to untie a gordian knot. Right now I am
trying to
determine how, when prey spatial distributions are not random, the amount of
time a
predator stays in a cell between moves effects the dynamics. Good Luck!
Cheers,
D3
Sven N. Thommesen wrote:
> At 12:34 AM 11/11/1998 +0100, you wrote:
> > Dear Sven,
> >
> > it seems to me that the statements of the last message of Glen in this
> >list, related to the discussion opened by James Marshall, are very
> >important in your perspective.
> >
> > A guess: your interesting classification is mainly related to the
> > software
> >design problem; the choice introduced by Glen (human cognitive constituent
> >functions vs. statistical - and I add: mathematical or formal - modeling of
> >human behavior) goes directly to the core of the agent construction problem.
> >
> > Pietro
>
> Definitely! I have already put it in the pile with a couple of other
> responses I received privately. I'll come back to the issue when I've had
> time to digest the responses.
>
> -Sven
>
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Swarm-Modelling is for discussion of Simulation and Modelling techniques
esp. using Swarm. For list administration needs (esp. [un]subscribing),
please send a message to <address@hidden> with "help" in the
body of the message.
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