CIG-RL: 不確実な環境下での発生源推定のための好奇心駆動型情報誘導強化学習
CIG-RL: Curiosity-Driven Information-Guided Reinforcement Learning for Source Term Estimation in Uncertain Environments
ガス発生源の特性を推定する問題に対し、好奇心による探索と不確実性適応型報酬を組み合わせた強化学習手法を提案し、高ノイズ環境でのロバスト性を実証した。
詳しい要約
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2. 先行研究と比べてどこがすごい?
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著者: Junhee Lee, Seunghwan Kim, Hongro Jang, Hyungjin Kim, Hyoungho Park, Changseung Kim, Hyondong Oh
分類: cs.RO
原文アブストラクト
Source term estimation (STE), which aims to estimate key properties of the gas source, is essential for identifying hazardous gas releases. Information-theoretic approaches have been adopted for autonomous STE using mobile sensors due to robustness in noisy environments, yet their online action selection incurs substantial computational cost. Deep reinforcement learning (DRL) provides a promising alternative with its fast decision-making capability. In DRL-based STE, the agent selects actions based on belief states of the source term updated from noisy measurement sequences. However, existing methods rely on random exploration or solely on belief uncertainty reduction without an effective exploration strategy in DRL, which can limit policy robustness in noisy environments. To address this, we propose a curiosity-driven information-guided reinforcement learning for robust and efficient STE. The proposed method promotes active exploration of novel belief state transitions that have not been sufficiently explored during training. We further introduce an uncertainty-adaptive active perception reward to guide efficient source search under uncertainty. Simulations under high-noise conditions and real-world experiments demonstrate the robustness and feasibility of the proposed framework, highlighting its potential for practical STE problems.