RIME: Robust Preference-based Reinforcement Learning with Noisy Preferences

• URL: http://arxiv.org/abs/2402.17257v4
• Date: Mon, 28 Oct 2024 12:26:53 GMT
• Title: RIME: Robust Preference-based Reinforcement Learning with Noisy Preferences
• Authors: Jie Cheng, Gang Xiong, Xingyuan Dai, Qinghai Miao, Yisheng Lv, Fei-Yue Wang,
• Abstract summary: Preference-based Reinforcement Learning (PbRL) circumvents the need for reward engineering by harnessing human preferences as the reward signal. We present RIME, a robust PbRL algorithm for effective reward learning from noisy preferences.
• Score: 23.414135977983953
• License:
• Abstract: Preference-based Reinforcement Learning (PbRL) circumvents the need for reward engineering by harnessing human preferences as the reward signal. However, current PbRL methods excessively depend on high-quality feedback from domain experts, which results in a lack of robustness. In this paper, we present RIME, a robust PbRL algorithm for effective reward learning from noisy preferences. Our method utilizes a sample selection-based discriminator to dynamically filter out noise and ensure robust training. To counteract the cumulative error stemming from incorrect selection, we suggest a warm start for the reward model, which additionally bridges the performance gap during the transition from pre-training to online training in PbRL. Our experiments on robotic manipulation and locomotion tasks demonstrate that RIME significantly enhances the robustness of the state-of-the-art PbRL method. Code is available at https://github.com/CJReinforce/RIME_ICML2024.

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