---
title: "Xiaogeng Liu — papers of 2025 — 2 papers, the most cited first"
description: "Xiaogeng Liu — papers of 2025: 2 papers on Elamur Research, the most cited first — what each work is about in our own words."
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# Xiaogeng Liu — papers of 2025 — 2 papers, the most cited first

2 papers · [all years of Xiaogeng Liu](https://md.research.elamur.ai/free/en/authors/xiaogeng-liu/#years)

**[AGrail: A Lifelong Agent Guardrail with Effective and Adaptive Safety Detection](https://md.research.elamur.ai/free/en/papers/luo-2025-agrail-lifelong-agent-guardrail-effective/) [Annual Meeting of the Association for Computational Linguistics (ACL)](https://md.research.elamur.ai/free/en/venues/acl/)**Weidi Luo, Shenghong Dai, Xiaogeng Liu, et al.*2025 · 20 citations*

**[PIGuard: Prompt Injection Guardrail via Mitigating Overdefense for Free](https://md.research.elamur.ai/free/en/papers/li-2025-piguard-prompt-injection-guardrail-mitigating/) [Annual Meeting of the Association for Computational Linguistics (ACL)](https://md.research.elamur.ai/free/en/venues/acl/)**Hao Li, Xiaogeng Liu, Ning Zhang, et al.*2025 · 16 citations*