When do neural ordinary differential equations generalize on complex networks?
- URL: http://arxiv.org/abs/2602.08980v1
- Date: Mon, 09 Feb 2026 18:28:41 GMT
- Title: When do neural ordinary differential equations generalize on complex networks?
- Abstract summary: We study neural ordinary differential equations ($mathtnODE$s) with vector fields following the Barabsi-Barzel form.<n>We find that degree heterogeneity and the type of dynamical system are the primary factors in determining $mathtnODE$s' ability to generalize across graph sizes and properties.
- Score: 0.1710303986316337
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Neural ordinary differential equations (neural ODEs) can effectively learn dynamical systems from time series data, but their behavior on graph-structured data remains poorly understood, especially when applied to graphs with different size or structure than encountered during training. We study neural ODEs ($\mathtt{nODE}$s) with vector fields following the Barabási-Barzel form, trained on synthetic data from five common dynamical systems on graphs. Using the $\mathbb{S}^1$-model to generate graphs with realistic and tunable structure, we find that degree heterogeneity and the type of dynamical system are the primary factors in determining $\mathtt{nODE}$s' ability to generalize across graph sizes and properties. This extends to $\mathtt{nODE}$s' ability to capture fixed points and maintain performance amid missing data. Average clustering plays a secondary role in determining $\mathtt{nODE}$ performance. Our findings highlight $\mathtt{nODE}$s as a powerful approach to understanding complex systems but underscore challenges emerging from degree heterogeneity and clustering in realistic graphs.
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