Kernel-Based Reinforcement Learning: A Finite-Time Analysis
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Abstract (arXiv)
We consider the exploration-exploitation dilemma in finite-horizon reinforcement learning problems whose state-action space is endowed with a metric. We introduce Kernel-UCBVI, a model-based optimistic algorithm that leverages the smoothness of the MDP and a non-parametric kernel estimator of the rewards and transitions to efficiently balance exploration and exploitation. For problems with K episodes and horizon H, we provide a regret bound of widetildeOleft( H3 K^frac2d2d+1right), where d is the covering dimension of the joint state-action space. This is the first regret bound for kernel-based RL using smoothing kernels, which requires very weak assumptions on the MDP and has been previously applied to a wide range of tasks. We empirically validate our approach in continuous MDPs with sparse rewards.
Key facts. Cited by 23 papers in the map (data through 14 Oct 2026). First posted on arXiv 12 Apr 2020.
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Citing papers per year: 2021: 1; 2022: 2; 2023: 6; 2024: 5; 2025: 5; 2026: 4.
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- 2023Kernelized Reinforcement Learning with Order Optimal Regret Boundscited by 20
- 2023Unlocking the Power of Representations in Long-term Novelty-based Explorationcited by 9
- 2023Sample Complexity of Kernel-Based Q-Learningcited by 8
- 2023Minimax Optimal Q Learning with Nearest Neighborscited by 8
- 2024Hybrid Transfer Reinforcement Learning: Provable Sample Efficiency from Shifted-Dynamics Datacited by 8
- 2022Near-optimal Policy Identification in Active Reinforcement Learningcited by 7
- 2024No-Regret Reinforcement Learning in Smooth MDPscited by 6
- 2023Near-optimal Conservative Exploration in Reinforcement Learning under Episode-wise Constraintscited by 5
- 2022Provably Efficient Kernelized Q-Learningcited by 4
- 2024Local Linearity: the Key for No-regret Reinforcement Learning in Continuous MDPscited by 4
- 2023A Kernel Perspective on Behavioural Metrics for Markov Decision Processescited by 3
- 2025Quantizer Design for Finite Model Approximations, Model Learning, and Quantized Q-Learning for MDPs with Unbounded Spacescited by 2
11 more
- 2021UVIP: Model-Free Approach to Evaluate Reinforcement Learning Algorithmscited by 1
- 2024Policy Zooming: Adaptive Discretization-based Infinite-Horizon Average-Reward Reinforcement Learningcited by 1
- 2025Near-Optimal Sample Complexity in Reward-Free Kernel-Based Reinforcement Learningcited by 1
- 2024Provably Adaptive Average Reward Reinforcement Learning for Metric Spacescited by 0
- 2025Reinforcement Learning Using known Invariancescited by 0
- 2025SHAP-Guided Kernel Actor-Critic for Explainable Reinforcement Learningcited by 0
- 2025Generalisation in Multitask Fitted Q-Iteration and Offline Q-learningcited by 0
- 2026Fitted Q-Iteration with Continuous Actions and Adaptive Data: Smoothed Coverage and Minimax Ratescited by 0
- 2026Improved Model-based Reinforcement Learning with Smooth Kernelscited by 0
- 2026Kernel-Based Safe Exploration in Deep Reinforcement Learningcited by 0
- 2026Mathematical methods of reinforcement learningcited by 0
- 2026Mathematical methods of reinforcement learning8 Jul 2026
- 2026Kernel-Based Safe Exploration in Deep Reinforcement Learning21 May 2026
- 2026Improved Model-based Reinforcement Learning with Smooth Kernels8 May 2026
- 2026Fitted Q-Iteration with Continuous Actions and Adaptive Data: Smoothed Coverage and Minimax Rates7 May 2026
- 2025Generalisation in Multitask Fitted Q-Iteration and Offline Q-learning23 Dec 2025
- 2025SHAP-Guided Kernel Actor-Critic for Explainable Reinforcement Learning4 Dec 2025
- 2025Reinforcement Learning Using known Invariances5 Nov 2025
- 2025Quantizer Design for Finite Model Approximations, Model Learning, and Quantized Q-Learning for MDPs with Unbounded Spaces5 Oct 2025
- 2025Near-Optimal Sample Complexity in Reward-Free Kernel-Based Reinforcement Learning11 Feb 2025
- 2024Hybrid Transfer Reinforcement Learning: Provable Sample Efficiency from Shifted-Dynamics Data6 Nov 2024
- 2024Local Linearity: the Key for No-regret Reinforcement Learning in Continuous MDPs31 Oct 2024
- 2024Provably Adaptive Average Reward Reinforcement Learning for Metric Spaces25 Oct 2024
11 more
- 2024Policy Zooming: Adaptive Discretization-based Infinite-Horizon Average-Reward Reinforcement Learning29 May 2024
- 2024No-Regret Reinforcement Learning in Smooth MDPs6 Feb 2024
- 2023A Kernel Perspective on Behavioural Metrics for Markov Decision Processes5 Oct 2023
- 2023Minimax Optimal Q Learning with Nearest Neighbors3 Aug 2023
- 2023Kernelized Reinforcement Learning with Order Optimal Regret Bounds13 Jun 2023
- 2023Near-optimal Conservative Exploration in Reinforcement Learning under Episode-wise Constraints9 Jun 2023
- 2023Unlocking the Power of Representations in Long-term Novelty-based Exploration2 May 2023
- 2023Sample Complexity of Kernel-Based Q-Learning1 Feb 2023
- 2022Near-optimal Policy Identification in Active Reinforcement Learning19 Dec 2022
- 2022Provably Efficient Kernelized Q-Learning21 Apr 2022
- 2021UVIP: Model-Free Approach to Evaluate Reinforcement Learning Algorithms5 May 2021
- 2024Hybrid Transfer Reinforcement Learning: Provable Sample Efficiency from Shifted-Dynamics Datacited by 8
- 2024No-Regret Reinforcement Learning in Smooth MDPscited by 6
- 2024Local Linearity: the Key for No-regret Reinforcement Learning in Continuous MDPscited by 4
- 2025Quantizer Design for Finite Model Approximations, Model Learning, and Quantized Q-Learning for MDPs with Unbounded Spacescited by 2
- 2024Policy Zooming: Adaptive Discretization-based Infinite-Horizon Average-Reward Reinforcement Learningcited by 1
- 2025Near-Optimal Sample Complexity in Reward-Free Kernel-Based Reinforcement Learningcited by 1
- 2024Provably Adaptive Average Reward Reinforcement Learning for Metric Spacescited by 0
- 2025Reinforcement Learning Using known Invariancescited by 0
- 2025SHAP-Guided Kernel Actor-Critic for Explainable Reinforcement Learningcited by 0
- 2025Generalisation in Multitask Fitted Q-Iteration and Offline Q-learningcited by 0
- 2026Improved Model-based Reinforcement Learning with Smooth Kernelscited by 0
- 2026Kernel-Based Safe Exploration in Deep Reinforcement Learningcited by 0
12 most cited of 13 All 13 (JSON)
- 2026Mathematical methods of reinforcement learning8 Jul 2026
- 2026Kernel-Based Safe Exploration in Deep Reinforcement Learning21 May 2026
- 2026Improved Model-based Reinforcement Learning with Smooth Kernels8 May 2026
- 2025Generalisation in Multitask Fitted Q-Iteration and Offline Q-learning23 Dec 2025
- 2025SHAP-Guided Kernel Actor-Critic for Explainable Reinforcement Learning4 Dec 2025
- 2025Reinforcement Learning Using known Invariances5 Nov 2025
- 2025Quantizer Design for Finite Model Approximations, Model Learning, and Quantized Q-Learning for MDPs with Unbounded Spaces5 Oct 2025
- 2025Near-Optimal Sample Complexity in Reward-Free Kernel-Based Reinforcement Learning11 Feb 2025
- 2024Hybrid Transfer Reinforcement Learning: Provable Sample Efficiency from Shifted-Dynamics Data6 Nov 2024
- 2024Local Linearity: the Key for No-regret Reinforcement Learning in Continuous MDPs31 Oct 2024
- 2024Provably Adaptive Average Reward Reinforcement Learning for Metric Spaces25 Oct 2024
- 2024Policy Zooming: Adaptive Discretization-based Infinite-Horizon Average-Reward Reinforcement Learning29 May 2024
12 newest of 13 All 13 (JSON)
- 2023Kernelized Reinforcement Learning with Order Optimal Regret Boundscited by 20
- 2023Unlocking the Power of Representations in Long-term Novelty-based Explorationcited by 9
- 2023Sample Complexity of Kernel-Based Q-Learningcited by 8
- 2023Minimax Optimal Q Learning with Nearest Neighborscited by 8
- 2022Near-optimal Policy Identification in Active Reinforcement Learningcited by 7
- 2023Near-optimal Conservative Exploration in Reinforcement Learning under Episode-wise Constraintscited by 5
- 2022Provably Efficient Kernelized Q-Learningcited by 4
- 2023A Kernel Perspective on Behavioural Metrics for Markov Decision Processescited by 3
- 2021UVIP: Model-Free Approach to Evaluate Reinforcement Learning Algorithmscited by 1
- 2026Fitted Q-Iteration with Continuous Actions and Adaptive Data: Smoothed Coverage and Minimax Ratescited by 0
- 2026Fitted Q-Iteration with Continuous Actions and Adaptive Data: Smoothed Coverage and Minimax Rates7 May 2026
- 2023A Kernel Perspective on Behavioural Metrics for Markov Decision Processes5 Oct 2023
- 2023Minimax Optimal Q Learning with Nearest Neighbors3 Aug 2023
- 2023Kernelized Reinforcement Learning with Order Optimal Regret Bounds13 Jun 2023
- 2023Near-optimal Conservative Exploration in Reinforcement Learning under Episode-wise Constraints9 Jun 2023
- 2023Unlocking the Power of Representations in Long-term Novelty-based Exploration2 May 2023
- 2023Sample Complexity of Kernel-Based Q-Learning1 Feb 2023
- 2022Near-optimal Policy Identification in Active Reinforcement Learning19 Dec 2022
- 2022Provably Efficient Kernelized Q-Learning21 Apr 2022
- 2021UVIP: Model-Free Approach to Evaluate Reinforcement Learning Algorithms5 May 2021