Author

Xue-Wei Yang

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#machine learning Preprint Sep 2026

DMRL: Document-Mediated Reinforcement Learning for Skill Optimization in Advertising Recommendation

Two key components are introduced: Dual-Relative Policy Optimization (DRPO), a post-training policy optimization method for robust and risk-aware advantage estimation; and Long-term Reward Predictor (LRP), which estimates long-term outcomes by modeling population heterogeneity with disentangled representation learning...

Wei Zhang, Hong-Ji Li, Song Sun et al. · 0 citations

#machine learning Preprint Jan 2026

X-Coder: Advancing Competitive Programming with Synthetic Tasks, Solutions, and Tests

This paper examines whether synthetic training artifacts can support the complete SFT-to-RL cycle for competitive programming, and synthesizes tasks, verified solutions, and reliable test cases that serve as reward signals for reinforcement learning.

Jie Wu, Haoling Li, Xin Zhang et al. · 1 citation