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Author

Kehai Chen

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Preprint Aug 2026

Hi-TTRL: Regulating Consensus with Hints for Test-Time Reinforcement Learning

Test-time reinforcement learning (TTRL) improves the reasoning capabilities of large language models without labeled data by updating the policy with pseudo-labels constructed through majority voting. While effective, the reward signal assigned from majority voting is highly sensitive to consensus strength, defined as...

Kunbin Xu, Xingzuo Li, Xue-Feng Bai et al. · 1 citation
Preprint Sep 2026

Joint Alignment and Distillation for Video Generation via Sample-Guided Distribution Matching

Aligning video generative models to human preferences heavily relies on Reinforcement Learning (RL), which suffers from extensive computational overhead. Existing workflows typically treat RL and distillation as disconnected stages: applying RL before distillation incurs prohibitive computational costs, whereas applyin...

Jiu-Zhou Lin, Jun-Long Wu, Feilong Zuo et al. · 0 citations
Jul 2026

DualAnchor: Preserving Language Priors and Improving Lexical Fidelity in Gloss-Free Sign Language Translation

Recent advances in large language models (LLMs) have led sign language translation (SLT), the task of converting sign-language videos into spoken-language text, to increasingly adopt LLMs as textual backbones. However, despite their strong language modeling capabilities, existing LLM-based SLT methods often undermine r...

Hongbin Zhang, Jun-Hao Liu, Xue-Feng Bai et al. · 0 citations
Conference Open access 2026

Diagnosing and Remedying Representation Deficiencies for Deterministic Reasoning in KGQA

The proposed DR 2 identifies and localizes non-deterministic reasoning behaviors, uncovering the underlying semantic representation deficiencies in LLMs, and designs abductive reasoning-based preference learning, which promotes fine-grained semantic discrimination and mitigates non-deterministic reasoning errors.

Ge Liang, Mufan Xu, Kehai Chen et al. · 0 citations

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