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CATS: Enhancing Multivariate Time Series Forecasting by Constructing Auxiliary Time Series as Exogenous Variables
March 5, 2024, 2:43 p.m. | Jiecheng Lu, Xu Han, Yan Sun, Shihao Yang
cs.LG updates on arXiv.org arxiv.org
Abstract: For Multivariate Time Series Forecasting (MTSF), recent deep learning applications show that univariate models frequently outperform multivariate ones. To address the difficiency in multivariate models, we introduce a method to Construct Auxiliary Time Series (CATS) that functions like a 2D temporal-contextual attention mechanism, which generates Auxiliary Time Series (ATS) from Original Time Series (OTS) to effectively represent and incorporate inter-series relationships for forecasting. Key principles of ATS - continuity, sparsity, and variability - are identified …
abstract applications arxiv cats construct cs.ai cs.lg deep learning exogenous forecasting functions multivariate series show stat.ml temporal time series time series forecasting type variables
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