Trajectory refinement improves reinforcement learning for long-horizon language-model agents

TrajEvolve revises unnecessary steps in historical trajectories and uses the resulting paths alongside fresh policy rollouts during training.

Chinese Tech
Yi Wen · Hao Chen · Wanyu Wang · Maolin Wang · Pengyue Jia · Derong Xu · +6 more

City University of Hong Kong · Tencent · Nanjing University

Research Digest··3 min read
Wen et al.

The authors developed TrajEvolve for tasks in which a language-model agent interacts with an environment over many steps and receives reward mainly at completion.

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