Contrastive Reinforcement Learning
Contrastive reinforcement learning (CRL) aims to improve reinforcement learning agents' ability to learn effectively from limited data and complex environments by leveraging contrastive learning techniques. Current research focuses on developing stable and efficient CRL algorithms, often incorporating infoNCE objectives or modifications of policy gradient methods, and exploring their application in diverse domains such as robotics, recommendation systems, and large language model fine-tuning. This approach shows promise in enhancing sample efficiency and enabling the learning of complex behaviors from limited rewards or even without explicit rewards, potentially leading to more robust and adaptable AI systems across various applications.