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Philip Ball

4 accepted papers

2022

Revisiting Design Choices in Offline Model Based Reinforcement Learning

ICLR 2022spotlight

Offline reinforcement learning enables agents to leverage large pre-collected datasets of environment transitions to learn control policies, circumventing the need for potentially expensive or unsafe online data collection. Significant progress has been made recently in offline model-based reinforce…

Cited by 70SourcePDFScholar
2022

Same State, Different Task: Continual Reinforcement Learning without Interference

AAAI 2022technical

Continual Learning (CL) considers the problem of training an agent sequentially on a set of tasks while seeking to retain performance on all previous tasks. A key challenge in CL is catastrophic forgetting, which arises when performance on a previously mastered task is reduced when learning a new ta…

2021

Towards tractable optimism in model-based reinforcement learning

UAI 2021poster

The principle of optimism in the face of uncertainty is prevalent throughout sequential decision making problems such as multi-armed bandits and reinforcement learning (RL). To be successful, an optimistic RL algorithm must over-estimate the true value function (optimism) but not by so much that it…

2020

Ready Policy One: World Building Through Active Learning

ICML 2020poster

Model-Based Reinforcement Learning (MBRL) offers a promising direction for sample efficient learning, often achieving state of the art results for continuous control tasks. However many existing MBRL methods rely on combining greedy policies with exploration heuristics, and even those which utilize…

Cited by 57SourcePDFScholar