GDEPO: Group Dual-dynamic and Equal-right Advantage Policy Optimization with Enhanced Training Data Utilization for Sample-Constrained Reinforcement Learning. - Zhengqing Yan; Xinyang Liu; Yi Zhang; Fan Guo; ChengXun Jia; Junchen Wan; Yao Liu; Qi Liu; Jihao Huang; Kang Song (CoRR, 2026)