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T-Rep: Representation Learning for Time Series using Time-Embeddings
May 10, 2024, 4:42 a.m. | Archibald Fraikin, Adrien Bennetot, St\'ephanie Allassonni\`ere
cs.LG updates on arXiv.org arxiv.org
Abstract: Multivariate time series present challenges to standard machine learning techniques, as they are often unlabeled, high dimensional, noisy, and contain missing data. To address this, we propose T-Rep, a self-supervised method to learn time series representations at a timestep granularity. T-Rep learns vector embeddings of time alongside its feature extractor, to extract temporal features such as trend, periodicity, or distribution shifts from the signal. These time-embeddings are leveraged in pretext tasks, to incorporate smooth and …
abstract arxiv challenges cs.ai cs.lg data embeddings learn machine machine learning machine learning techniques multivariate representation representation learning series standard time series type vector vector embeddings
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