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Youbang Sun

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#artificial intelligence Preprint Sep 2026

Diffusion Reward Models

Reward models underpin the alignment of large language models, yet the dominant designs reduce each prompt--response pair to a point estimate or to a distribution from a fixed parametric family. This is at odds with human preference, which is inherently multimodal: the same response can be reasonably judged in many way...

Xiang-Yang Wang, Bing-Xiang He, Ze-Yuan Liu et al. · 0 citations
Jul 2026

Frontis-MA1: Training an AI4AI Model towards Recursive Self-Improvement in Machine Learning Engineering

Recursive self-improvement (RSI) requires AI systems that improve the process of building AI (i.e., AI4AI); machine learning engineering (MLE) offers a concrete, executable testbed for studying this capability. We introduce OpenMLE, an open full-stack system for RSI research in MLE, spanning verifiable task environment...

Junlin Yang, Che Jiang, Yu Fu et al. · 3 citations
#machine learning Preprint Aug 2026

Safin-1: Safety from Within through Memory-Native State Evolution

The routed-state interface unifies contextual memory and persistent capability adaptation within the model's native computation, reframing memory from a passive record of prior context into an active substrate for maintaining and evolving model behavior.

Ming Zhang, Kai-Sen Yang, Shu Yu et al. · 0 citations
Preprint Aug 2026

MARCH: Scaling Recurrent Memory with Content-Routed State Anchors

Memory-Anchor Routing across Context History (MARCH), a network architecture that effectively scales state-space models beyond a fixed-size dimension, while maintaining computational efficiency over long-sequences, is introduced.

Ming Zhang, Kai-Sen Yang, Shu Yu et al. · 1 citation

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