Author

Yiwen Zhang

2 papers indexed here

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Preprint Aug 2026

Robust Code RL via Faulty-Code-Driven Test case Synthesis and Dense Reward Shaping

Experimental results show that RL fine-tuning of Qwen3-32B via RobustTests achieves a 3% absolute gain on LiveCodeBench, demonstrating its effectiveness in advancing LLM code generation proficiency.

Yiwen Zhang, Xiaodong Yan, Zhen-Yu Huang et al. · 0 citations

Preprint Jul 2026

An AI Scientist that Doesn't Drift: Taste, Structure, and Falsifiable Findings in a Quadruped Navigation Research Loop

An AI Scientist is presented for studying generalisation in quadruped robot navigation policies in simulation and an immutable experiment card that pairs each iteration's prediction with its outcome under a fixed schema, so a falsified hypothesis cannot be retconned.

Yiwen Zhang, Eloise Zeng, Jaeha Lee et al. · 0 citations