@article{spaderstepwisepeeradvantagewithdiversity, title = {SPADER: Step-wise Peer Advantage with Diversity-Aware Exploration Rewards for Multi-Answer Question Answering}, author = {Qiming Shi and Zhaolu Kang and Yunfan Zhou and Di Weng and Yingcai Wu}, year = {2026}, eprint = {2606.00593}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2606.00593}, }