Classifiers in High Dimensional Hilbert Metrics

Fuente: arXiv
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Main Authors: Acharya, Aditya, Gezalyan, Auguste H., Mount, David M.
Format: Preprint
Published: 2026
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author Acharya, Aditya
Gezalyan, Auguste H.
Mount, David M.
author_facet Acharya, Aditya
Gezalyan, Auguste H.
Mount, David M.
contents Classifying points in high dimensional spaces is a fundamental geometric problem in machine learning. In this paper, we address classifying points in the $d$-dimensional Hilbert polygonal metric. The Hilbert metric is a generalization of the Cayley-Klein hyperbolic distance to arbitrary convex bodies and has a diverse range of applications in machine learning and convex geometry. We first present an efficient LP-based algorithm in the metric for the large-margin SVM problem. Our algorithm runs in time polynomial to the number of points, bounding facets, and dimension. This is a significant improvement on previous works, which either provide no theoretical guarantees on running time, or suffer from exponential runtime. We also consider the closely related Funk metric. We also present efficient algorithms for the soft-margin SVM problem and for nearest neighbor-based classification in the Hilbert metric.
format Preprint
id arxiv_https___arxiv_org_abs_2601_13410
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Classifiers in High Dimensional Hilbert Metrics
Acharya, Aditya
Gezalyan, Auguste H.
Mount, David M.
Computational Geometry
Machine Learning
Classifying points in high dimensional spaces is a fundamental geometric problem in machine learning. In this paper, we address classifying points in the $d$-dimensional Hilbert polygonal metric. The Hilbert metric is a generalization of the Cayley-Klein hyperbolic distance to arbitrary convex bodies and has a diverse range of applications in machine learning and convex geometry. We first present an efficient LP-based algorithm in the metric for the large-margin SVM problem. Our algorithm runs in time polynomial to the number of points, bounding facets, and dimension. This is a significant improvement on previous works, which either provide no theoretical guarantees on running time, or suffer from exponential runtime. We also consider the closely related Funk metric. We also present efficient algorithms for the soft-margin SVM problem and for nearest neighbor-based classification in the Hilbert metric.
title Classifiers in High Dimensional Hilbert Metrics
topic Computational Geometry
Machine Learning
url https://arxiv.org/abs/2601.13410