From Trial-and-Error to Improvement: A Systematic Analysis of LLM Exploration Mechanisms in RLVR. - Jia Deng; Jie Chen 007; Zhipeng Chen 001; Daixuan Cheng; Fei Bai; Beichen Zhang; Yinqian Min; Yanzipeng Gao; Wayne Xin Zhao; Ji-Rong Wen (CoRR, 2025)