Sun, Zetian, Dongfang Li, Baotian Hu, and Min Zhang. “Improving Value-Based Process Verifier via Low-Cost Variance Reduction”. Proceedings of the AAAI Conference on Artificial Intelligence 40, no. 39 (March 14, 2026): 33162–33170. Accessed May 19, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/40600.