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Chenrui Ma

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#machine learning Preprint Oct 2026

Only What You've Signed up For: Secure Workflows with Constrained Diffusion Agents

As agentic AI systems take on increasingly complex and consequential tasks, securing them against prompt injection becomes critical. Existing defenses often rely on detecting or reasoning about injected malicious instructions and can therefore remain vulnerable to adaptive attacks that optimize the injection itself. Di...

Michael Cardei, Anjun Hu, Chen-Rui Ma et al. · 0 citations
Preprint Aug 2026

Dynamic Hub-and-Spoke Memory for Streaming Video Understanding

Dynamic Hub-and-Spoke Memory is proposed, a training-free framework that represents distant history as structured textual memory while preserving the recent frames as visual tokens for fine-grained perception in streaming video understanding.

Xin-Ru Jiang, Lin Zhao, Xi Xiao et al. · 4 citations

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