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English(EN) PL-Guard: Probabilistic Logic Reasoning for LLM Guardrails

PL-Guard架构将大语言模型接地与推理分离,以增强安全性

研究人员推出了一种新颖的神经符号架构PL-Guard,旨在通过分离语义接地和策略推理来增强大语言模型(LLM)的安全性。该方法使用带有谓词和ProbLog规则的符号策略接口,其中本地LLM将提示-响应对接地为谓词概率,而ProbLog执行显式的概率规则推理。在XSTest基准上的评估表明,与基础模型相比,PL-Guard将不安全合规率从22.0%显著降低到0.5%,优于LLM作为裁判的基线。然而,这种改进伴随着更高的过度拒绝率,表明安全性与有用性之间存在权衡,而PL-Guard的设计使得这种权衡变得明确且可审计。 AI

影响 通过将推理与接地分离来增强LLM安全性,使护栏决策更易于审计,并可能减少有害输出。

排序理由 该集群包含一篇详细介绍LLM护栏新方法的论文。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.AI 阅读 →

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PL-Guard架构将大语言模型接地与推理分离,以增强安全性

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该集群包含一篇详细介绍LLM护栏新方法的论文。[lever_c_demoted from research: ic=1 ai=1.0]
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报道来源 [1]

  1. arXiv cs.AI TIER_1 English(EN) · Satchit Chatterji, Shihan Wang, Giovanni Sileno, Erman Acar ·

    PL-Guard:用于 LLM 护栏的概率逻辑推理

    arXiv:2608.15673v1 Announce Type: cross Abstract: Large language model guardrails can be viewed as policy-consistency problems: a system must determine which policy-relevant facts hold in a prompt-response pair and what those facts imply under a given policy. Common approaches, i…