Peisong Wang Ruotian Ma Bang Zhang Xingyu Chen Zhiwei He 0002 Kang Luo Qingsong Lv Qingxuan Jiang Zheng Xie Shanyi Wang Yuan Li Fanghua Ye 0004 Jian Li Yifan Yang Zhaopeng Tu Xiaolong Li RLVER: Reinforcement Learning with Verifiable Emotion Rewards for Empathetic Agents. 2025 July abs/2507.03112 CoRR https://doi.org/10.48550/arXiv.2507.03112 db/journals/corr/corr2507.html#abs-2507-03112 streams/journals/corr