Author

Yulun Wu

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Preprint Oct 2026

RASteer: Retain-Aware Activation Steering for Concept Erasure in Diffusion Models

Concept erasure aims to remove a target concept, such as a copyrighted style, a recognizable character, or unsafe content, from a pretrained text-to-image diffusion model while preserving its ability to generate other content. Existing activation steering methods build an erasure direction mainly from the target concep...

Yong-Liang Wu, Haori Lu, Yu-Lun Wu et al. · 0 citations

Preprint Aug 2026

Alternating Levenberg-Marquardt Training of Physics-Informed Neural Networks with Fourier-Enhanced Features

This work proposes the Fourier-enhanced alternating Levenberg--Marquardt PINN (FALM-PINN), an optimization framework that decouples representation learning from coefficient fitting within a single nonconvex optimization objective.

Yu-Lun Wu, Matthieu Barreau, Miguel Aguiar et al. · 0 citations