Mitigating Tail Narrowing in LLM Self-Improvement via Socratic-Guided Sampling. - Yiwen Ding; Zhiheng Xi; Wei He 024; Lizhuoyuan Lizhuoyuan; Yitao Zhai; Shi Xiaowei; Xunliang Cai; Tao Gui; Qi Zhang 001; Xuanjing Huang 001 (NAACL (Long Papers), 2025)