EvoLM: Self-Evolving Language Models through Co-Evolved Discriminative Rubrics. - Shuyue Stella Li; Rui Xin; Teng Xiao; Yike Wang 002; Rulin Shao; Zoey Hao; Melanie Sclar; Sewoong Oh; Faeze Brahman; Pang Wei Koh; Yulia Tsvetkov (CoRR, 2026)