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Wei-Wen Xu

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#artificial intelligence Preprint Sep 2026

Pistis Technical Report

This work proposes Interleaved Distillation and Reinforcement Learning (IDRL), a novel post-training paradigm that tightly integrates on-policy distillation and reinforcement learning within a single training loop and enables more effective knowledge transfer, greater optimization stability, and more precise credit ass...

Heyu Chen, Xiao-Han Lan, Jia-Xin Li et al. · 0 citations
Sep 2026

Lingshu: Generalist Foundation Model for Unified Multimodal Medical Understanding and Reasoning.

This work proposes a comprehensive data-curation procedure that efficiently acquires rich medical knowledge data not only from medical imaging but also from extensive medical texts and general domain data and develops a medical-specialized MLLM, Lingshu-Med, which consistently outperforms existing multimodal baselines...

Wei-Wen Xu, Hou-Pong Chan, Long Li 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
#small language model Preprint Aug 2026

Video-OPSD: Exploiting Privileged Visual Evidence for On-Policy Self-Distillation in Video Large Language Models

Experiments across video understanding and reasoning benchmarks show that the Evidence-Grounded Self-Teacher framework consistently improves upon Standard OPSD across multiple backbones and achieves performance comparable to GRPO while requiring substantially less training time, establishing an effective and efficient...

Zi-Yue Wang, Shiqi Huang, Wei-Wen Xu et al. · 0 citations

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