Unveiling Attractor Cycles in Large Language Models: A Dynamical Systems View of Successive Paraphrasing

Fuente: arXiv
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Auteurs principaux: Wang, Zhilin, Li, Yafu, Yan, Jianhao, Cheng, Yu, Zhang, Yue
Format: Preprint
Publié: 2025
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author Wang, Zhilin
Li, Yafu
Yan, Jianhao
Cheng, Yu
Zhang, Yue
author_facet Wang, Zhilin
Li, Yafu
Yan, Jianhao
Cheng, Yu
Zhang, Yue
contents Dynamical systems theory provides a framework for analyzing iterative processes and evolution over time. Within such systems, repetitive transformations can lead to stable configurations, known as attractors, including fixed points and limit cycles. Applying this perspective to large language models (LLMs), which iteratively map input text to output text, provides a principled approach to characterizing long-term behaviors. Successive paraphrasing serves as a compelling testbed for exploring such dynamics, as paraphrases re-express the same underlying meaning with linguistic variation. Although LLMs are expected to explore a diverse set of paraphrases in the text space, our study reveals that successive paraphrasing converges to stable periodic states, such as 2-period attractor cycles, limiting linguistic diversity. This phenomenon is attributed to the self-reinforcing nature of LLMs, as they iteratively favour and amplify certain textual forms over others. This pattern persists with increasing generation randomness or alternating prompts and LLMs. These findings underscore inherent constraints in LLM generative capability, while offering a novel dynamical systems perspective for studying their expressive potential.
format Preprint
id arxiv_https___arxiv_org_abs_2502_15208
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Unveiling Attractor Cycles in Large Language Models: A Dynamical Systems View of Successive Paraphrasing
Wang, Zhilin
Li, Yafu
Yan, Jianhao
Cheng, Yu
Zhang, Yue
Computation and Language
68T50
I.2.7
Dynamical systems theory provides a framework for analyzing iterative processes and evolution over time. Within such systems, repetitive transformations can lead to stable configurations, known as attractors, including fixed points and limit cycles. Applying this perspective to large language models (LLMs), which iteratively map input text to output text, provides a principled approach to characterizing long-term behaviors. Successive paraphrasing serves as a compelling testbed for exploring such dynamics, as paraphrases re-express the same underlying meaning with linguistic variation. Although LLMs are expected to explore a diverse set of paraphrases in the text space, our study reveals that successive paraphrasing converges to stable periodic states, such as 2-period attractor cycles, limiting linguistic diversity. This phenomenon is attributed to the self-reinforcing nature of LLMs, as they iteratively favour and amplify certain textual forms over others. This pattern persists with increasing generation randomness or alternating prompts and LLMs. These findings underscore inherent constraints in LLM generative capability, while offering a novel dynamical systems perspective for studying their expressive potential.
title Unveiling Attractor Cycles in Large Language Models: A Dynamical Systems View of Successive Paraphrasing
topic Computation and Language
68T50
I.2.7
url https://arxiv.org/abs/2502.15208