Author

Zhiqing Xiao

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#artificial intelligence Preprint Oct 2026

From Structural Feedback to Prompt Policies: Learning Faithful Text-to-Image Prompt Editors

StruPO is proposed, a structure-aware prompt editor that uses a calibrated scene graph as a shared representation for policy conditioning and image-grounded supervision, and improves the faithfulness--aesthetics trade-off, with consistent gains in relational fidelity.

Wen-Song Ye, Ya-Li Ye, Zhi-Qing Xiao et al. · 0 citations

#machine learning Preprint Sep 2026

Frozen Cores Need Task Signal: Fisher-Whitened Cross-Covariance for Low-Resource LLM Adaptation

FCCA, which estimates the signed input--error cross-covariance, whitens it with diagonal Fisher moments, truncates it in the resulting local metric, maps the selected directions back, and applies thin QR to obtain stable core coordinates, shows that a carefully selected fixed span can recover most of the benefit of mov...

Wen-Song Ye, Zhan-Ming Shen, Zhiqing Xiao et al. · 1 citation · ⚡1