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arXiv · 2109.13514

Random Dilated Shapelet Transform: A New Approach for Time Series Shapelets

Antoine Guillaume·Christel Vrain·Elloumi Wael
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Abstract

Shapelet-based algorithms are widely used for time series classification because of their ease of interpretation, but they are currently outperformed by recent state-of-the-art approaches. We present a new formulation of time series shapelets including the notion of dilation, and we introduce a new shapelet feature to enhance their discriminative power for classification. Experiments performed on 112 datasets show that our method improves on the state-of-the-art shapelet algorithm, and achieves comparable accuracy to recent state-of-the-art approaches, without sacrificing neither scalability, nor interpretability.

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Antoine Guillaume, Christel Vrain, Elloumi Wael. 2021-09-28. Random Dilated Shapelet Transform: A New Approach for Time Series Shapelets. https://doi.org/10.1007/978-3-031-09037-0_53

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