Batch Reinforcement Learning
Batch reinforcement learning (BRL) focuses on training reinforcement learning agents using a fixed dataset of pre-collected experiences, eliminating the need for costly and potentially risky real-time interaction with the environment. Current research emphasizes improving sample efficiency through techniques like novel loss functions (e.g., log-loss), multi-step modeling of dynamics to mitigate error compounding, and advanced algorithms such as those inspired by game theory (e.g., Stackelberg learning) or leveraging human feedback for reward shaping. BRL's significance lies in its potential to enable safe and efficient deployment of RL agents in high-stakes applications like robotics and healthcare, where extensive real-world interaction is impractical or undesirable.