Hodge Laplacians and Hodge Diffusion Maps

Alvaro Almeida Gomez; Jorge Duque Franco

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arXiv · 2504.07910

Hodge Laplacians and Hodge Diffusion Maps

Alvaro Almeida Gomez·Jorge Duque Franco

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Abstract

We introduce Hodge Diffusion Maps, a novel manifold learning algorithm designed to analyze and extract topological information from high-dimensional data-sets. This method approximates the exterior derivative acting on differential forms, thereby providing an approximation of the Hodge Laplacian operator. Hodge Diffusion Maps extend existing non-linear dimensionality reduction techniques, including vector diffusion maps, as well as the theories behind diffusion maps and Laplacian Eigenmaps. Our approach captures higher-order topological features of the data-set by projecting it into lower-dimensional Euclidean spaces using the Hodge Laplacian. We develop a theoretical framework to estimate the approximation error of the exterior derivative, based on sample points distributed over a real manifold. Numerical experiments support and validate the proposed methodology.

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Alvaro Almeida Gomez, Jorge Duque Franco. 2025-04-10. Hodge Laplacians and Hodge Diffusion Maps. https://arxiv.org/abs/2504.07910

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