arXiv:2511.02969cs.LGcs.AI2025-11

用信息价值提升强化学习探索效率,无需调参。

Value of Information-Enhanced Exploration in Bootstrapped DQN

  • 基于信息价值估计,引导网络不同分支间分歧大的区域探索
  • 在稀疏奖励的Atari游戏上性能提升,且利用初始化不确定性更充分
  • 方法简单高效,不增加额外超参数,适合复杂环境探索任务

深度强化学习中的高效探索仍是根本挑战,尤其在高维状态和稀疏奖励环境下。传统依赖随机局部策略噪声(如ε-贪心、Boltzmann探索)的方法难以有效平衡探索与利用。本文将(期望)信息价值(EVOI)融入经典的Bootstrapped DQN框架,增强其深层探索能力。提出两种新算法,通过信息价值估计衡量不同网络头之间的意见差异,引导探索向最有潜力的区域。实验在复杂的稀疏奖励Atari游戏中验证了性能提升,同时更有效地利用了由随机网络初始化带来的固有不确定性,且未引入额外超参数。

原文摘要 · Abstract (English)

Efficient exploration in deep reinforcement learning remains a fundamental challenge, especially in environments characterized by high-dimensional states and sparse rewards. Traditional exploration strategies that rely on random local policy noise, such as $ε$-greedy and Boltzmann exploration methods, often struggle to efficiently balance exploration and exploitation. In this paper, we integrate the notion of (expected) value of information (EVOI) within the well-known Bootstrapped DQN algorithmic framework, to enhance the algorithm's deep exploration ability. Specifically, we develop two novel algorithms that incorporate the expected gain from learning the value of information into Bootstrapped DQN. Our methods use value of information estimates to measure the discrepancies of opinions among distinct network heads, and drive exploration towards areas with the most potential. We evaluate our algorithms with respect to performance and their ability to exploit inherent uncertainty arising from random network initialization. Our experiments in complex, sparse-reward Atari games demonstrate increased performance, all the while making better use of uncertainty, and, importantly, without introducing extra hyperparameters.

强化学习探索策略信息价值DQN

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