Fengli Xu, Qianyue Hao, Zefang Zong, Jingwei Wang, Yunke Zhang, Jingyi Wang, Xiaochong Lan, Jiahui Gong et al.
A survey paper systematically organizing methodologies for improving LLM reasoning through reinforcement learning.
Existing LLMs rely on simple autoregressive generation, showing limitations in complex reasoning tasks. Methods are needed to generate intermediate thought processes like humans, learn through trial and error, and invest more computation at test time to improve accuracy.
Focusing on the learning-to-reason paradigm using reinforcement learning, the paper analyzes three key technical axes: automated data construction, learning-based reasoning techniques (tree search, reflective thinking, etc.), and test-time scaling. The OpenAI o1 series is presented as a representative case.
Systematically organizes the overall flow of LLM reasoning research and presents the development direction toward Large Reasoning Models. Emphasizes that the combination of automated data generation, RL-based learning, and test-time scaling is key to improving reasoning performance.