# COLLECTIVE DECISION UNDER PARTIAL OBSERVABILITY - A Dynamic Local Interaction Model

### Arnaud Canu, Abdel-Illah Mouaddib

#### Abstract

This paper introduces DyLIM, a new model to describe partially observable multiagent decision making problems under uncertainty. DyLIM deals with local interactions amongst the agents, and build the collective behavior from individual ones. Usually, such problems are described using collaborative stochastic games, but this model makes the strong assumption that agents are interacting all the time with all the other agents. With DyLIM, we relax this assumption to be more appropriate to real-life applications, by considering that agents interact sometimes with some agents. We are then able to describe the multiagent problem as a set of individual problems (sometimes interdependent), which allow us to break the combinatorial complexity. We introduce two solving algorithms for this model and we evaluate them on a set of dedicated benchmarks. Then, we show how our approach derive near optimal policies, for problems involving a large number of agents.

#### References

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#### Paper Citation

#### in Harvard Style

Canu A. and Mouaddib A. (2011). **COLLECTIVE DECISION UNDER PARTIAL OBSERVABILITY - A Dynamic Local Interaction Model** . In *Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: ECTA, (IJCCI 2011)* ISBN 978-989-8425-83-6, pages 146-155. DOI: 10.5220/0003643801460155

#### in Bibtex Style

@conference{ecta11,

author={Arnaud Canu and Abdel-Illah Mouaddib},

title={COLLECTIVE DECISION UNDER PARTIAL OBSERVABILITY - A Dynamic Local Interaction Model},

booktitle={Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: ECTA, (IJCCI 2011)},

year={2011},

pages={146-155},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0003643801460155},

isbn={978-989-8425-83-6},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: ECTA, (IJCCI 2011)

TI - COLLECTIVE DECISION UNDER PARTIAL OBSERVABILITY - A Dynamic Local Interaction Model

SN - 978-989-8425-83-6

AU - Canu A.

AU - Mouaddib A.

PY - 2011

SP - 146

EP - 155

DO - 10.5220/0003643801460155