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Home / Proceedings / Proceedings of the International Conference on Automated Planning and Scheduling, 24 / Book One

Thompson Sampling Based Monte-Carlo Planning in POMDPs

February 1, 2023

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Authors

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen

University of Science and Technology of China,University of Southampton,National University of Singapore,University of Science and Technology of China


DOI:

10.1609/icaps.v24i1.13616


Abstract:

Monte-Carlo tree search (MCTS) has been drawing great interest in recent years for planning under uncertainty. One of the key challenges is the trade-off between exploration and exploitation. To address this, we introduce a novel online planning algorithm for large POMDPs using Thompson sampling based MCTS that balances between cumulative and simple regrets. The proposed algorithm Dirichlet-Dirichlet-NormalGamma based Partially Observable Monte-Carlo Planning (D2NG-POMCP) treats the accumulated reward of performing an action from a belief state in the MCTS search tree as a random variable following an unknown distribution with hidden parameters. Bayesian method is used to model and infer the posterior distribution of these parameters by choosing the conjugate prior in the form of a combination of two Dirichlet and one NormalGamma distributions. Thompson sampling is exploited to guide the action selection in the search tree. Experimental results confirmed that our algorithm outperforms the state-of-the-art approaches on several common benchmark problems.

Topics: ICAPS

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HOW TO CITE:

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen Thompson Sampling Based Monte-Carlo Planning in POMDPs Proceedings of the International Conference on Automated Planning and Scheduling, 24 (2014) 29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen Thompson Sampling Based Monte-Carlo Planning in POMDPs ICAPS 2014, 29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen (2014). Thompson Sampling Based Monte-Carlo Planning in POMDPs. Proceedings of the International Conference on Automated Planning and Scheduling, 24, 29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. Thompson Sampling Based Monte-Carlo Planning in POMDPs. Proceedings of the International Conference on Automated Planning and Scheduling, 24 2014 p.29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. 2014. Thompson Sampling Based Monte-Carlo Planning in POMDPs. "Proceedings of the International Conference on Automated Planning and Scheduling, 24". 29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. (2014) "Thompson Sampling Based Monte-Carlo Planning in POMDPs", Proceedings of the International Conference on Automated Planning and Scheduling, 24, p.29-37

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen, "Thompson Sampling Based Monte-Carlo Planning in POMDPs", ICAPS, p.29-37, 2014.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. "Thompson Sampling Based Monte-Carlo Planning in POMDPs". Proceedings of the International Conference on Automated Planning and Scheduling, 24, 2014, p.29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. "Thompson Sampling Based Monte-Carlo Planning in POMDPs". Proceedings of the International Conference on Automated Planning and Scheduling, 24, (2014): 29-37.

Aijun Bai,Feng Wu,Zongzhang Zhang,Xiaoping Chen. Thompson Sampling Based Monte-Carlo Planning in POMDPs. ICAPS[Internet]. 2014[cited 2023]; 29-37.


ISSN: 2334-0843


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