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Author

Chenguang Wang

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Jul 2026

Agent Security Needs Redefinition through a Holistic Framework

This work operationalizes contextual security through four properties that must hold jointly and be evaluated continuously across the agent's trajectory, which changes which defenses are coherent, which evaluations measure something useful, and which attack patterns evaluation can see at all.

Vincent Siu, Jingxuan He, Kyle Montgomery et al. · 1 citation
Preprint Aug 2026

Tunable Tool-Call Rates in LLM Agents via Representation Steering

Whether an instruction-tuned model calls a tool can be controlled by a single linear direction in its residual stream, extracted without any training from the model's own tool-use preference signal and turned into an inference-time intervention with no prompt change.

Yu-Qiang Chen, Vincent Siu, Yang Liu et al. · 0 citations
Review Aug 2026

CliniCARE-Bench: Clinical Calibrated Audit of Medical Reasoning in EHR

CliniCARE-Bench is the first deployment-oriented clinical-agent benchmark to jointly evaluate real longitudinal EHR investigation, claim-level evidence grounding, governing-policy use, process adherence, and calibrated abstention within a common patient-level adjudication framework.

Veronica Chatrath, Bryan Zhu, George Pu et al. · 1 citation

ChainWorld: Composing Long-Horizon Desktop Workloads from Atomic OSWorld Tasks

ChainWorld, which composes atomic OSWorld tasks into long horizon desktop workloads through directional compatibility search while preserving the source evaluators, is studied, which contains 347 chains of length two to four and compares two renderings of the same task sequence.

Vincent Siu, Manasi Sharma, D. Song et al. · 0 citations

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