Papers › Efficient Approximation of the Matching Distance for 2-parameter persistence

Efficient Approximation of the Matching Distance for 2-parameter persistence

12 Dec 2019arXiv:1912.05826links table onlyarchive 2025-07-28

Michael Kerber, Arnur Nigmetov

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The matching distance is a computationally tractable topological measure to compare multi-filtered simplicial complexes. We design efficient algorithms for approximating the matching distance of two bi-filtered complexes to any desired precision ϵ>0. Our approach is based on a quad-tree refinement strategy introduced by Biasotti et al., but we recast their approach entirely in geometric terms. This point of view leads to several novel observations resulting in a practically faster algorithm. We demonstrate this speed-up by experimental comparison and provide our code in a public repository which provides the first efficient publicly available implementation of the matching distance.

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