Proceedings

Monte-Carlo Expectation Maximization for Decentralized POMDPs

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Proceedings of the Twenty-Third International Joint Conference on Artificial Intelligence. Pages 397-402.

Abstract

We address two significant drawbacks of state-of-the-art solvers of decentralized POMDPs (DEC-POMDPs): the reliance on complete knowledge of the model and limited scalability as the complexity of the domain grows. We extend a recently proposed approach for solving DEC-POMDPs via a reduction to the maximum likelihood problem, which in turn can be solved using EM. We introduce a model-free version of this approach that employs Monte-Carlo EM(MCEM). While a naive implementation of MCEM is inadequate in multi-agent settings, we introduce several improvements in sampling that produce high-quality results on a variety of DEC-POMDP benchmarks, including large problems with thousands of agents.

Feng Wu, Shlomo Zilberstein, and Nicholas R. Jennings. 2013. Monte-Carlo Expectation Maximization for Decentralized POMDPs. In Proceedings of the Twenty-Third International Joint Conference on Artificial Intelligence, IJCAI-13. IJCAI, 397–402. https://ijcai.org/proceedings/2013/66
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