@article{shorterthoughtssameanswersdifficultyscal, title = {Shorter Thoughts, Same Answers: Difficulty-Scaled Segment-Wise RL for CoT Compression}, author = {Ye Tian and Aijun Liu}, year = {2026}, eprint = {2603.07598}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2603.07598}, }