arXiv:2508.16636cs.CLcs.AI2025-08被引 2

让大模型学会何时快速回答,何时深度思考。

Cognitive Decision Routing in Large Language Models: When to Think Fast, When to Think Slow

  • 根据问题复杂度动态选择快慢推理策略
  • 比统一深度推理节省34%计算成本
  • 适合需要专业判断的高阶任务场景

大型语言模型在决定何时依赖快速直觉反应、何时进行更慢的深思熟虑推理方面面临根本性挑战。受丹尼尔·卡尼曼双过程理论及人类认知偏差洞察的启发,我们提出一种新型认知决策路由(CDR)框架,根据查询特征动态确定合适的推理策略。该方法解决了当前模型或采用统一推理深度,或对所有查询使用高成本方法的局限。我们引入元认知层,通过多重维度分析查询复杂度:已有信息与结论间的相关性强度、领域边界跨越情况、利益相关方数量以及不确定性水平。在多种推理任务上的广泛实验表明,CDR在性能上表现更优,相比统一深度推理方法降低34%的计算开销。在专业判断任务中尤为突出,一致性提升23%,专家级评估准确率提高18%。本工作将认知科学原理与实际人工智能系统设计相结合,为大模型自适应推理提供了原则性方案。

原文摘要 · Abstract (English)

Large Language Models (LLMs) face a fundamental challenge in deciding when to rely on rapid, intuitive responses versus engaging in slower, more deliberate reasoning. Inspired by Daniel Kahneman's dual-process theory and his insights on human cognitive biases, we propose a novel Cognitive Decision Routing (CDR) framework that dynamically determines the appropriate reasoning strategy based on query characteristics. Our approach addresses the current limitations where models either apply uniform reasoning depth or rely on computationally expensive methods for all queries. We introduce a meta-cognitive layer that analyzes query complexity through multiple dimensions: correlation strength between given information and required conclusions, domain boundary crossings, stakeholder multiplicity, and uncertainty levels. Through extensive experiments on diverse reasoning tasks, we demonstrate that CDR achieves superior performance while reducing computational costs by 34\% compared to uniform deep reasoning approaches. Our framework shows particular strength in professional judgment tasks, achieving 23\% improvement in consistency and 18\% better accuracy on expert-level evaluations. This work bridges cognitive science principles with practical AI system design, offering a principled approach to adaptive reasoning in LLMs.

大模型推理认知机制自适应决策

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