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Yu-Peng Hou

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#machine learning Preprint Sep 2026

Dissecting Training-Free Uncertainty Estimation in Multimodal LLMs

Multimodal Large Language Models (MLLMs) have achieved remarkable performance across a wide range of multimodal tasks, yet understanding and quantifying their predictive uncertainty remains underexplored despite being central for safety critical applications. In this work, we present a systematic study of training-free...

Soroush Seifi, Vaggelis Dorovatas, Lin Li et al. · 0 citations

CoFiRec: Coarse-to-Fine Tokenization for Generative Recommendation

CoFiRec is proposed, a novel generative recommendation framework that explicitly incorporates the Coarse-to-Fine nature of item semantics into the tokenization process, and it is proved that structured tokenization leads to lower dissimilarity between generated and ground truth items, supporting its effectiveness in ge...

Tianxin Wei, Xuying Ning, Xu-Xing Chen et al. · 18 citations · ⚡1

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