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Zi-Xuan Xia

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#artificial intelligence Preprint Sep 2026

Understanding Confabulation and Rethinking Reconstruction in Activation Explanations

A standardized evaluation framework for unstructured NLA explanations is introduced, measuring information recoverable from explanations, contextual support for their claims, and writing quality, and opening up a direction for improving activation-derived training to encourage more informative, supported, and readable...

Gert Lek, Zi-Xuan Xia, Pin-Yu Chen et al. · 0 citations

#machine learning Preprint Jan 2026

Diverse via bounded Agreement: Geometric Regularization for Multimodal Fusion

The results suggest that explicitly regulating representation geometry is an effective complement to optimization balancing, and provide evidence that geometry-aware regularization can improve multimodal learning across diverse architectures and domains.

Zixuan Xia, Hao Wang, Peng-Cheng Weng et al. · 1 citation