arXiv:2608.06276stat.MLcs.LG2026-08

用强化学习让拓扑图谱动态演化,实现可控的结构简化与建模。

Stochastic Dynamics on Persistence Diagram Space via Reinforcement Learning

论文配图:Stochastic Dynamics on Persistence Diagram Space via Reinforcement Learning
图 1 · 摘自论文原文
  • 通过拓扑感知的局部编辑操作,构建可控制的马尔可夫过程。
  • 在合成与神经影像数据上成功保留主要拓扑结构并降低复杂度。
  • 适合需要拓扑结构分析与简化的研究者,如生物医学图像处理。

持久性图(PDs)为多尺度拓扑结构提供了稳定且可解释的总结。尽管在PD的统计分析方面已取得显著进展,但现有研究通常将图谱视为静态对象,缺乏对PD空间上概率建模与随机演化的有效框架。本文提出一种基于强化学习的PD空间随机动力学框架,使图谱通过拓扑感知的局部编辑操作演化。该动力学定义了具有可变基数的有限PD空间上的受控马尔可夫过程。我们建立了马尔可夫链不可约、非周期且几何遍历的条件,表明在PD空间上存在唯一的平稳概率分布。为引导动力学向科学相关的拓扑目标演化,我们设计了涵盖分布匹配、任务特定拓扑统计量及结构保持压缩的目标函数。所生成的奖励平衡了任务导向分布目标、图谱保真度与复杂度降低,实现了自适应拓扑简化与概率建模。在合成数据与神经影像PD上的实验表明,该框架可在降低图谱复杂度的同时保留主导拓扑结构。

原文摘要 · Abstract (English)

Persistence diagrams (PDs) provide stable and interpretable summaries of multiscale topological structure. While substantial progress has been made in the statistical analysis of PDs, existing literature often treats diagrams as static objects and provide limited frameworks for probabilistic modeling and stochastic evolution on PD space. We introduce a reinforcement learning framework for stochastic dynamics on PD space, where diagrams evolve through topology aware local edit operations. The dynamics define controlled Markov processes on spaces of finite PDs with variable cardinality. We establish conditions under which the induced Markov chains are irreducible, aperiodic, and geometrically ergodic, implying the existence of unique stationary probability laws on PD space. To guide the dynamics toward scientifically relevant topological targets, we formulate objectives that encompass distribution matching, task specific topological statistics, and structure-preserving compression. The resulting rewards balance task specific distributional targets, diagram fidelity, and complexity reduction, and yield a framework for adaptive topological simplification and probabilistic modeling. Experiments on synthetic and neuroimaging PDs demonstrate that the proposed framework can preserve dominant topological structure while reducing diagram complexity.

拓扑数据分析强化学习随机过程图谱演化

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