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Long Li

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#artificial intelligence Preprint Sep 2026

Spotter: Let the Embodied Model Lead, and the VLM Reflect for It

Spotter is proposed, which reverses the roles: the embodied model leads and executes continuously, while the VLM runs in parallel, monitors through a lightweight local screener, intervenes only when an error is detected, reflects on and corrects it, and returns control.

Long Li, Qi-Chao Zhao, Yue Yang et al. · 0 citations
Conference Open access 2026

MMAC: A Multilingual, Multimodal Alignment Framework for Cultural Grounding Evaluation

The causes of modal divergence are probed, offering insights into fostering culturally robust MLLMs, and a Multilingual, Multimodal Alignment framework for Cultural grounding evaluation is proposed.

Weihua Zheng, Zhengyuan Liu, Tanmoy Chakraborty et al. · 0 citations
Preprint Aug 2026

Start Classifying: Categorical Critics for LLM Reinforcement Learning

Proximal Policy Optimization (PPO) for large language models typically trains its critic by mean-squared-error (MSE) regression on scalar value targets. Although scalar MSE is statistically valid for estimating the conditional expected return, sparse binary rewards in reinforcement learning with verifiable rewards (RLV...

Zhi-Jian Zhou, Long Li, Xuan Zhang et al. · 2 citations · ⚡2

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