Title

Constraint-Based Dynamic Programming for Decentralized POMDPs with Structured Interactions

Publication Type

Conference Proceeding Article

Publication Date

6-2009

Abstract

Decentralized partially observable MDPs (DEC-POMDPs) provide a rich framework for modeling decision making by a team of agents. Despite rapid progress in this area, the limited scalability of solution techniques has restricted the applicability of the model. To overcome this computational barrier, research has focused on restricted classes of DEC-POMDPs, which are easier to solve yet rich enough to capture many practical problems. We present CBDP, an efficient and scalable point-based dynamic programming algorithm for one such model called ND-POMDP (Network Distributed POMDP). Specifically, CBDP provides magnitudes of speedup in the policy computation and generates better quality solution for all test instances. It has linear complexity in the number of agents and horizon length. Furthermore, the complexity per horizon for the examined class of problems is exponential only in a small parameter that depends upon the interaction among the agents, achieving significant scalability for large, loosely coupled multi-agent systems. The efficiency of CBDP lies in exploiting the structure of interactions using constraint networks. These results extend significantly the effectiveness of decision-theoretic planning in multi-agent settings.

Discipline

Artificial Intelligence and Robotics | Operations Research, Systems Engineering and Industrial Engineering

Research Areas

Intelligent Systems and Decision Analytics

Publication

Proceedings of the 8th International Conference on Autonomous Agents and Multimagent Systems: May 10-15, 2009, Budapest, Hungary

First Page

561

Last Page

568

ISBN

9780981738161

Publisher

International Foundation for Autonomous Agent and Multiagent Systems

City or Country

Richland, SC

Additional URL

http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.149.4158