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arXiv 2503.13530cs.LGcs.AI
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大型语言模型中的认知激活与混沌动力学:推理机制的拟Lyapunov分析

Cognitive Activation and Chaotic Dynamics in Large Language Models: A Quasi-Lyapunov Analysis of Reasoning Mechanisms

School of Management, Hefei University of Technology(合肥工业大学管理学院)

Xiaojian Li, Yongkang Leng, Ruiqing Ding, Hangjie Mo, Shanlin Yang

AI总结:

本文提出“认知激活”理论并用拟Lyapunov指数分析LLM各层混沌特征,证明信息积累呈非线性指数规律、MLP贡献高于注意力且初值扰动显著影响推理,从而为推理可解释性与平衡创造性、可靠性提供混沌理论框架。

摘要:

大型语言模型(LLM)所展现的类人推理能力,挑战了传统神经网络理论对固定参数系统灵活性的理解。本文提出“Cognitive Activation(认知激活)”理论,从动态系统视角揭示LLM推理机制的本质:模型的推理能力源于参数空间中动态信息提取的混沌过程。通过引入Quasi-Lyapunov Exponent(QLE,拟Lyapunov指数),我们定量分析了模型在不同层的混沌特征。实验表明,模型的信息积累遵循非线性指数规律,并且Multilayer Perceptron(MLP,多层感知机)在最终输出中所占比例高于注意力机制。进一步实验表明,微小的初始值扰动会对模型的推理能力产生显著影响,证实了大型语言模型是混沌系统这一理论分析。本研究为LLM推理的可解释性提供了一个混沌理论框架,并揭示了在模型设计中平衡创造性与可靠性的潜在路径。

英文摘要:

The human-like reasoning capabilities exhibited by Large Language Models (LLMs) challenge the traditional neural network theory's understanding of the flexibility of fixed-parameter systems. This paper proposes the "Cognitive Activation" theory, revealing the essence of LLMs' reasoning mechanisms from the perspective of dynamic systems: the model's reasoning ability stems from a chaotic process of dynamic information extraction in the parameter space. By introducing the Quasi-Lyapunov Exponent (QLE), we quantitatively analyze the chaotic characteristics of the model at different layers. Experiments show that the model's information accumulation follows a nonlinear exponential law, and the Multilayer Perceptron (MLP) accounts for a higher proportion in the final output than the attention mechanism. Further experiments indicate that minor initial value perturbations will have a substantial impact on the model's reasoning ability, confirming the theoretical analysis that large language models are chaotic systems. This research provides a chaos theory framework for the interpretability of LLMs' reasoning and reveals potential pathways for balancing creativity and reliability in model design.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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