Author

Kai-Yuan Zhang

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#artificial intelligence Preprint Sep 2026

ActGov: Governing LLM Agent Actions via Policy-Constrained Validation

Large language model (LLM) agents increasingly execute long-horizon workflows through external tools, allowing untrusted outputs to influence subsequent actions and exceed user authorization. Existing defenses isolate injected content or constrain execution with predefined plans and static policies, but these approache...

Kai-Yuan Zhang, Yu-Ke Peng, Ke Jiang et al. · 0 citations

#artificial intelligence Preprint Aug 2026

PII-TRACE: A Benchmark for Context-Aware PII Detection in Multi-Turn LLM Conversations

LLM assistants and agentic systems log long multi-turn conversations. AI providers often scan these conversations for Personally Identifiable Information (PII) and mask the PII before storing or processing conversation data. Yet most PII detectors and benchmarks target self-contained records rather than cross-turn eval...

Kai-Yuan Zhang, Chuan Wang, Joey Zhong et al. · 0 citations