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Hong Peng

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#artificial intelligence Preprint Oct 2026

DNAlign: Dynamic Null-Space Safe Alignment for LLMs

DNAlign is a lightweight alignment framework that integrates control-theoretic optimization with null-space projection and restricts these perturbations to the harmful-related subspace derived from neutral hidden states, thereby preserving general knowledge and response quality.

Ji-Sheng Dang, Yu-Shu Zhao, De-Wei Liu et al. · 0 citations
#natural language process... Preprint Aug 2026

Read-Best Is Not Steer-Best: A Probing--Steering Layer Dissociation in Omni-Modal Large Language Models

Results show that probing accuracy is a poor heuristic for selecting intervention layers and suggest a cross-architecture mid-to-late selection criterion, and identify a cross-modal emotion subspace organized by valence and arousal.

Yi-Bo Wang, Ji-Sheng Dang, Bi-Mei Wang et al. · 1 citation · ⚡1
#small language model Preprint Aug 2026

PhysMLLMs: Spatial Priors for Unified Referring Segmentation and Grounded Reasoning of Images and Videos

PhysMLLMs is a training-stage prior injection architecture that injects physics-inspired spatial continuity priors into Video MLLMs, demonstrating that the injected spatial prior improves video consistency without compromising image-level grounding or general multimodal capability.

Siyao Yan, Bo Han, Ji-Sheng Dang et al. · 0 citations

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