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Author

Haifeng Chen

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Preprint Aug 2026

HARP: Hierarchical Adaptive Ranking with Preference-Adaptive Fusion for Query-Based CVE Prioritization

Vulnerability prioritization is inherently preference dependent, since the same CVE can receive different remediation priority under different operational preference scenarios. Existing scoring systems and ranking methods typically assume a fixed criterion. In practice, organizations already operate under a preference...

Hao-Chen Liu, Zheng-Zhang Chen, Hao-Yu Wang et al. · 0 citations
#artificial intelligence Preprint Oct 2026

It Takes Workflows to Evolve Better Workflows

Tackling complex real-world tasks can exceed the capabilities of a single large language model (LLM), motivating the use of multi-agent workflows that coordinate specialized agents to work together on these tasks. Recent methods train LLMs to construct better workflows from execution outcomes, but they optimize only th...

Xue-Hang Guo, Hao-Yu Wang, Hai-Feng Chen et al. · 0 citations
#artificial intelligence Preprint Sep 2026

PolicyMem: Geometric Policy Memory for LLM Governance

PolicyMem is introduced, a geometric policy memory that externalizes natural-language policies as reusable geometric memory objects represented by low-rank subspaces in a shared representation space that achieves state-of-the-art unsafe behavior detection while enabling effective policy attribution, rewriting, and post...

Yuan-Chen Bei, Zheng-Zhang Chen, Yan-Jun Zhao et al. · 0 citations
Conference Open access 2026

LOKA: Conflict-Aware LLM Knowledge Update with Adaptive Knowledge Memory

This work investigates the problem of LLM knowledge updates, which requires simultaneously unlearning unwanted information and learning new knowledge, and proposes LOKA, a conflict-aware framework for Large language mOdel Knowledge updAtes.

Binchi Zhang, Zhengzhang Chen, Zaiyi Zheng et al. · 0 citations

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