Authors

Yuan Lu

Publications 2

Preprint Open access

RubricArmor: Adversarial Evolution Improves LLM-Based Rubric Generation

Haocheng Yang, Yuchao Zhang, Licheng Pan et al. · 2026

Rubric-based reinforcement learning (RL) provides interpretable rewards for aligning large language models (LLMs) by evaluating responses against query-specific evaluation criteria. To construct rubrics at scale, a straightforward approach to LLM-based rubric generation is to prompt an LLM to generate a rubric directly …

Preprint Open access

Learning Where to Steer: Noise-Space Geometry for Efficient Offline Multi-Objective Optimization with Generative Models

Yuan Lu, Esha Singh, Yi-An Ma et al. · 2026

Offline multi-objective optimization (MOO) seeks solutions with better objective trade-offs using only a fixed dataset, without querying the objectives. Diffusion models trained on such data have emerged as a promising approach, but their samples are not inherently better than the data and must be steered toward the Pa …

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