Research Papers 论文研究 7d ago Updated 7d ago 更新于 7天前 49

Safe and Adaptive Cloud Healing: Verifying LLM-Generated Recovery Plans with a Neural-Symbolic World Model 安全且自适应的云修复:使用神经符号世界模型验证LLM生成的恢复计划

Introduction of PASE, a Planning-Aware Semantic self-healing engine that treats cloud fault recovery as a neuro-symbolic program synthesis task. Integration of an LLM as a Plan Synthesis Engine, guided by a Meta-Prompt Optimizer trained via Deep Reinforcement Learning to generate optimal prompts. Utilization of a Neural-Symbolic World Model to verify the feasibility of LLM-generated recovery plans through simulation before execution. Empirical results show a reduction in average system recovery 提出PASE框架,将云系统故障自愈重新定义为神经符号程序合成任务,突破传统松散耦合架构局限。 核心组件包括作为计划合成引擎的LLM、通过仿真验证可行性的神经符号世界模型,以及基于DRL优化的元提示优化器。 构建“推理-计划-验证-适应”紧密闭环,实现超越预定义动作空间的动态上下文感知恢复策略生成。 在真实云故障注入数据集上实验表明,平均系统恢复时间减少超过40%,且在未知故障场景中检测准确率显著提升。

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Impact 影响力

Analysis 深度分析

TL;DR

  • Introduction of PASE, a Planning-Aware Semantic self-healing engine that treats cloud fault recovery as a neuro-symbolic program synthesis task.
  • Integration of an LLM as a Plan Synthesis Engine, guided by a Meta-Prompt Optimizer trained via Deep Reinforcement Learning to generate optimal prompts.
  • Utilization of a Neural-Symbolic World Model to verify the feasibility of LLM-generated recovery plans through simulation before execution.
  • Empirical results show a reduction in average system recovery time by over 40% and improved fault detection accuracy in unknown scenarios compared to state-of-the-art methods.

Why It Matters

This research addresses the critical need for reliable, automated fault management in complex cloud-based AI systems, moving beyond static, predefined recovery actions. By tightly coupling LLM reasoning with symbolic verification and reinforcement learning, it offers a robust pathway to autonomous system management that can handle novel and unpredictable failures effectively.

Technical Details

  • PASE Framework: Reconceptualizes recovery as a neuro-symbolic program synthesis task, utilizing a library of semantic primitives to construct structured recovery plans.
  • Meta-Prompt Optimizer: Employs Deep Reinforcement Learning to dynamically learn and generate optimal prompts that guide the LLM’s planning process, enhancing adaptability.
  • Neural-Symbolic World Model: Acts as a verifier, simulating proposed recovery plans to ensure feasibility and safety before deployment, creating a tight reason-plan-verify-adapt loop.
  • Performance Metrics: Validated on a real-world cloud fault injection dataset, demonstrating significant improvements in recovery speed and detection accuracy for unknown faults.

Industry Insight

  • The shift from loosely coupled LLM/DRL integrations to tightly integrated neuro-symbolic loops represents a significant advancement in operational AI reliability.
  • Organizations managing large-scale cloud infrastructure should consider adopting adaptive, verification-heavy LLM frameworks to mitigate risks associated with automated recovery actions.
  • The use of meta-learning for prompt optimization suggests a future where AI agents continuously refine their own instruction sets based on environmental feedback, reducing manual tuning efforts.

TL;DR

  • 提出PASE框架,将云系统故障自愈重新定义为神经符号程序合成任务,突破传统松散耦合架构局限。
  • 核心组件包括作为计划合成引擎的LLM、通过仿真验证可行性的神经符号世界模型,以及基于DRL优化的元提示优化器。
  • 构建“推理-计划-验证-适应”紧密闭环,实现超越预定义动作空间的动态上下文感知恢复策略生成。
  • 在真实云故障注入数据集上实验表明,平均系统恢复时间减少超过40%,且在未知故障场景中检测准确率显著提升。

为什么值得看

本文展示了大语言模型在复杂系统运维(AIOps)中的新范式,即从单纯的语义理解转向可执行计划的生成与验证,为构建高可靠性的自主云管理系统提供了关键技术路径。其提出的神经符号结合方法有效解决了LLM在生成操作计划时可能存在的幻觉和不可靠问题,具有重要的工程实践价值。

技术解析

  • PASE架构设计:PASE(Planning-Aware Semantic self-healing engine)是一个新颖的故障自愈框架,它将恢复过程视为神经符号程序合成任务。不同于以往将LLM仅用于语义理解的串行架构,PASE让LLM成为核心的计划合成引擎,从语义原语库中生成结构化的恢复计划。
  • 神经符号世界模型验证:引入神经符号世界模型对LLM生成的计划进行可行性验证。该模型通过仿真模拟系统状态变化,确保生成的恢复计划在逻辑和物理约束上是可行的,从而弥补了纯数据驱动方法缺乏可解释性和保证的缺陷。
  • DRL驱动的元提示优化:采用深度强化学习(DRL)训练一个元提示优化器(Meta-Prompt Optimizer)。该优化器能够学习并生成最优的提示词,以动态引导LLM的规划过程,使系统能够根据当前上下文自适应地调整策略,而非依赖静态提示。
  • 闭环自适应机制:整个系统形成了一个紧密的“推理-计划-验证-适应”循环。这种机制使得系统能够在面对未知故障时,动态生成超出预定义动作空间的恢复策略,实现了真正的自适应自愈。

行业启示

  • LLM在运维领域的角色升级:行业应关注LLM从辅助工具向核心决策引擎的转变。未来的智能运维系统将更依赖于LLM生成结构化、可执行的代码或计划,而不仅仅是提供建议。
  • 神经符号AI的重要性凸显:在要求高可靠性的关键基础设施(如云计算、自动驾驶)中,纯深度学习模型存在风险。结合符号逻辑验证的神经符号AI将成为平衡创新能力与安全性的主流方案。
  • 自动化闭环系统的必要性:单一的故障检测或修复模块已不足以应对复杂云环境。构建包含生成、验证、反馈优化的完整自动化闭环系统,是提升系统韧性和降低MTTR(平均修复时间)的关键战略方向。

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