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Combining reward shaping and hierarchies for scaling to large multiagent systems

Published online by Cambridge University Press:  11 February 2016

Chris HolmesParker ,
Adrian K. Agogino  and
Kagan Tumer
Chris HolmesParker
Affiliation:
School of MIME, Oregon State University, 442 Rogers Hall, Corvallis, OR 97331-6001, USA e-mail: holmespc@onid.orst.edu, kagan.tumer@oregonstate.edu
Adrian K. Agogino
Affiliation:
UCSC at NASA Ames, Mail Stop 269-3, Moffett Field, CA 94035, USA e-mail: Adrian.K.Agogino@nasa.gov
Kagan Tumer
Affiliation:
School of MIME, Oregon State University, 442 Rogers Hall, Corvallis, OR 97331-6001, USA e-mail: holmespc@onid.orst.edu, kagan.tumer@oregonstate.edu
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Abstract

Coordinating the actions of agents in multiagent systems presents a challenging problem, especially as the size of the system is increased and predicting the agent interactions becomes difficult. Many approaches to improving coordination within multiagent systems have been developed including organizational structures, shaped rewards, coordination graphs, heuristic methods, and learning automata. However, each of these approaches still have inherent limitations with respect to coordination and scalability. We explore the potential of synergistically combining existing coordination mechanisms such that they offset each others’ limitations. More specifically, we are interested in combining existing coordination mechanisms in order to achieve improved performance, increased scalability, and reduced coordination complexity in large multiagent systems.

In this work, we discuss and demonstrate the individual limitations of two well-known coordination mechanisms. We then provide a methodology for combining the two coordination mechanisms to offset their limitations and improve performance over either method individually. In particular, we combine shaped difference rewards and hierarchical organization in the Defect Combination Problem with up to 10 000 sensing agents. We show that combining hierarchical organization with difference rewards can improve both coordination and scalability by decreasing information overhead, structuring agent-to-agent connectivity and control flow, and improving the individual decision-making capabilities of agents. We show that by combining hierarchies and difference rewards, the information overheads and computational requirements of individual agents can be reduced by as much as 99% while simultaneously increasing the overall system performance. Additionally, we demonstrate the robustness of this approach to handling up to 25% agent failures under various conditions.

Type
Articles
Information
The Knowledge Engineering Review , Volume 31 , Issue 1: Adaptive Learning Agents , January 2016 , pp. 3 - 18
Copyright
© Cambridge University Press, 2016 

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References

Agogino, A., HolmesParker, C. & Tumer, K. 2012. Evolving large scale UAV communication system. In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO), Philadelphia, PA, July.CrossRefGoogle Scholar
Agogino, A. & Tumer, K. 2008. Analyzing and visualizing multi-agent rewards in dynamic and stochastic domains. Journal of Autonomous Agents and Multi-Agent Systems (JAAMAS) 17(2), 320–338.CrossRefGoogle Scholar
Barrett, S., Stone, P. & Kraus, S. 2011. Empirical evaluation of ad hoc teamwork in the pursuit domain. In Proceedings of 11th International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2011), May.Google Scholar
Bharathidasan, A. & Ponduru, V. 2003. Sensor networks – an overview. IEEE Potentials.Google Scholar
Challet, D. & Johnson, N. 2002. Optimal combination of imperfect objects. Physics Review Letters 89, 028071.CrossRefGoogle ScholarPubMed
Devlin, S. & Kudenko, D. 2011. Theoretical considerations of potential-based reward shaping for multi-agent systems. In Proceedings of the 10th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).Google Scholar
Farinelli, A., Rogers, A. & Jennings, N. 2008. Maximising sensor network efficiency through agent-based coordination of sense/sleep schedules. In Workshop on Energy in Wireless Sensor Networks.Google Scholar
Grzes, M. & Kudenko, D. 2010. Online learning of shaping rewards in reinforcement learning. Neural Networks 23, 541–550.CrossRefGoogle ScholarPubMed
Hayden, S., Carrick, C. & Yang, Q. 1999. A catalog of agent coordination patterns. In Proceedings of the 3rd Annual Conference on Autonomous Agents.CrossRefGoogle Scholar
HolmesParker, C., Agogino, A. & Tumer, K. 2012. Evolving distributed resource sharing for cubesat constellations. In Proceedings of the Genetic and Evolutionary Computation Conference (GECCO), Philadelphia, PA, July 2012.Google Scholar
HolmesParker, C., Agogino, A. & Tumer, K. 2013. Exploiting structure and utilizing agent-centric rewards to promote coordination in large multiagent systems (extended-abstract). In Proceedings of the 12th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).Google Scholar
Horling, B. & Lesser, V. 2005. A survey of multiagent organizational paradigms. Knowledge Engineering Review 19(4), 281–316.CrossRefGoogle Scholar
Horling, B., Mailler, R. & Lesser, V. 2004. A case study of organizational effects in a distributed sensor network. In Proceedings of the International Conference on Intelligent Agent Technology.CrossRefGoogle Scholar
Howley, E. & Duggan, J. 2011. Investing in the commons: a study of openness and the emergence of cooperation. Advances in Complex Systems 14.CrossRefGoogle Scholar
Knudson, M. & Tumer, K. 2010. Coevolution of heterogeneous multi-robot teams. In Genetic and Evolutionary Computation Conference (GECCO).CrossRefGoogle Scholar
Kok, J. & Vlassis, N. 2006. Collaborative multiagent reinforcement learning by payoff propagation. Journal of Machine Learning Research (JMLR) 7, 1789–1828.Google Scholar
Mehta, N., Ray, S., Tadepalli, P. & Dietterich, T. 2008. Automatic discovery and transfer of maxq hierarchies. In Proceedings of the 25th International Conference on Machine Learning (ICML).CrossRefGoogle Scholar
Ng, A., Harada, D. & Russell, S. 1999. Policy invariance under reward transformations: theory and application to reward shaping. In Proceedings of International Conference on Machine Learning.Google Scholar
Panait, L. & Luke, S. 2005. Cooperative multi-agent learning – the state of the art. Journal of Autonomous Agents and MultiAgent Systems (JAAMAS) 11(3), 387–434.CrossRefGoogle Scholar
Rogers, A., Farinelli, A. & Jennings, N. 2010. Self-organising sensors for wide area surveillance using the max-sum algorithm. In Self-Organizing Architectures, 6090, 84–100. Lecture Notes in Computer Science, Springer.CrossRefGoogle Scholar
Sutton, R. & Barto, A. 1998. Reinforcement Learning An Introduction. MIT Press.CrossRefGoogle Scholar
Tambe, M., Bowring, E., Jung, H., Kaminka, G., Maheswaran, R., Marecki, J., Modi, P., Nair, R., Okamoto, S., Pearce, J., Paruchuri, P., Pynadath, D., Scerri, P., Schurr, N. & Varakantham, P. 2005. Conflicts in teamwork – hybrids to the rescue. In Proceedings of the 4th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).CrossRefGoogle Scholar
Tham, C. & Renaud, J. 2005. Multi-agent systems on sensor networks a distributed reinforcement learning approach. In Intelligent Sensors, Sensor Networks and Information Processing Conference (ISSNIP).Google Scholar
Tumer, K. 2005. Designing agent utilities for coordinated, scalable, and robust multiagent systems. In Challenges in the Coordination of Large Scale Multiagent Systems, P. Scerri, R. Mailler & R. Vincent (eds). Springer, 173–188.Google Scholar
Vinyals, M., Rodriguez-Aguilar, J. & Cerquides, J. 2010. A survey on sensor networks from a multiagent perspective. The Computer Journal.Google Scholar
Vrancx, P., Verbeeck, K. & Nowe, A. 2008. Decentralized learning in Markov games. IEEE Transactions on Systems, Man, and Cybernetics – Part B: Cybernetics 38(4), 976–981.CrossRefGoogle ScholarPubMed
Williamson, S., Gerding, E. & Jennings, N. 2009. Reward shaping for valuing communications during multi-agent coordination. In Proceedings of the 8th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).Google Scholar
Wolpert, D. H. & Tumer, K. 2001. Optimal payoff functions for members of collectives. Advances in Complex Systems 4(2/3), 265–279.CrossRefGoogle Scholar
Xu, Y., Scerri, P., Yu, B., Okamoto, S., Lewis, M. & Sycara, K. 2005. An integrated token-based algorithm for scalable coordination. In Proceedings of the 4th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).CrossRefGoogle Scholar
Zhang, C., Abdallah, S. & Lesser, V. 2009. Integrating organizational control into multi-agent learning. In Procceedings of the 8th International Conference on Autonomous Agents and Multiagent Systems (AAMAS).Google Scholar