Effectiveness of High-Dimensional Distance Metrics on Solar Flare Time Series

, Gary; Ahmadzadeh∗, Azim; . Aparna†‡, V; Rohlfing∗, Elaina

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Original Research Article

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Effectiveness of High-Dimensional Distance Metrics on Solar Flare Time Series

Shared by Gary on Nov 5, 2025 • 01:33 PM UTC

Authors:

Azim Ahmadzadeh∗

V . Aparna†‡

Elaina Rohlfing∗

Abstract

—Solar-flare forecasting has been extensively re-\searched yet remains an open problem. In this paper, we investi-\gate the contributions of elastic distance measures for detecting patterns in the solar-flare dataset, SWAN-SF. We employ a simple k-medoids clustering algorithm to evaluate the effecti...

Open Access

Subject

time series

flare

distance

Highlights

-Elastic distance measures (DTW, MSM, TWE) do not outperform Euclidean distance on SWAN-SF in a thorough, optimized evaluation.

-High-dimensional, stochastic solar flare time series effectively collapse elastic distances toward Euclidean distance.

-Thousands of experiments and both quantitative and qualitative evidence support the ineffectiveness of elastic measures beyond Euclidean in this setting.

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