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Theses

Distributed Decision-Making and Task
Coordination in Dynamic, Uncertain and
Real-Time Multiagent Environments

Abstract : Decision-making in uncertainty and coordination are at the heart of multiagent
systems. In this kind of systems, agents have to be able to perceive their environment
and take decisions while considering the other agents. When the environment is partially
observable, agents have to be able to manage this uncertainty in order to take the
most enlightened decisions they can based on the incomplete information they have
acquired. Moreover, in the context of cooperative multiagent environments, agents
have to coordinate their actions in order to accomplish complex tasks requiring more
then one agent.
In this thesis, we consider complex cooperative multiagent environments (dynamic,
uncertain and real-time). In this kind of environments, we propose an approach of
decision-making in uncertainty that enable the agents to flexibly coordinate themselves.
More precisely, we present an online algorithm for partially observable Markov decision
processes (POMDPs).
Furthermore, in such complex environments, agent's tasks can also become quite
complex. In this context, it could be complicated for the agents to determine the
required number of resources to accomplish each task. To address this problem, we
propose a learning algorithm to learn the number of resources necessary to accomplish
a task based on the characteristics of this task. In a similar manner, we propose a
scheduling approach enabling the agents to schedule their tasks in order to maximize
the number of tasks that could be accomplish in a limited time.
All these approaches have been developed to enable the agents to efficiently coordinate
all their complex tasks in a partially observable, dynamic and uncertain multiagent
environment. All these approaches have demonstrated their effectiveness in tests done
in the RoboCupRescue simulation environment.
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Contributor : Sébastien Paquet <>
Submitted on : Tuesday, September 12, 2006 - 2:32:17 AM
Last modification on : Monday, July 20, 2020 - 1:06:04 PM
Long-term archiving on: : Tuesday, April 6, 2010 - 12:53:10 AM

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  • HAL Id : tel-00092684, version 1

Citation

Sébastien Paquet. Distributed Decision-Making and Task
Coordination in Dynamic, Uncertain and
Real-Time Multiagent Environments. Other [cs.OH]. Université Laval, 2005. English. ⟨tel-00092684⟩

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