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DiaSeg: Diagonal Segment Extraction from DTW Paths for Interpretable Gait Analysis

arXiv · AI, language, vision and robotics · article · Sep 21, 2026 · UTC

Dynamic Time Warping (DTW) is the dominant approach for measuring similarity between time series, yet standard practice discards the optimal warping path after computing a single distance value, losing local alignment information most relevant to clinical diagnosis. We introduce DiaSeg, a framework that extracts diagonal segments from DTW paths with controlled breaks, characterizing each segment by five geometric features (effective length, interruption count, cost variation, temporal position, and path context), and enabling unsupervised pattern discovery without domain-specific feature engin

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