Author

Yuxin Xiong

2 papers indexed here

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Jul 2026

RRPO: Reference-Relative Policy Optimization with Stratified Conditional Rollouts

Across verifiable reasoning, open-ended generation, and post-SFT settings, RRPO remains competitive with verifier-based optimization, improves over weakly supervised baselines, and provides additional gains after supervised fine-tuning.

Yuxin Xiong, Xun-Yi Jiang, Rohan Surana et al. · arXiv.org · 0 citations

#artificial intelligence Preprint Aug 2026

Toward Latent Language Model Skills Steering and Optimization: An Empirical Study

This empirical study investigates whether procedural LLM skills can be represented as directions in activation space and whether vector-space operations over these directions can express skill-level behaviors and finds that procedural skills admit a vector-space representation.

Xun-Yi Jiang, Jun-Da Wu, Yuxin Xiong et al. · 0 citations