Quasi Zigzag Persistence: A Topological Framework for Analyzing Time-Varying Data
Machine Learning
2026-01-21 v3 Algebraic Topology
Abstract
In this paper, we propose Quasi Zigzag Persistent Homology (QZPH) as a framework for analyzing time-varying data by integrating multiparameter persistence and zigzag persistence. To this end, we introduce a stable topological invariant that captures both static and dynamic features at different scales. We present an algorithm to compute this invariant efficiently. We show that it enhances the machine learning models when applied to tasks such as sleep-stage detection, demonstrating its effectiveness in capturing the evolving patterns in time-varying datasets.
Keywords
Cite
@article{arxiv.2502.16049,
title = {Quasi Zigzag Persistence: A Topological Framework for Analyzing Time-Varying Data},
author = {Tamal K. Dey and Shreyas N. Samaga},
journal= {arXiv preprint arXiv:2502.16049},
year = {2026}
}