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Some recent trends in embeddings of time series and dynamic networks

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  • Dag Tjøstheim
  • Martin Jullum
  • Anders Løland

Abstract

We give a review of some recent developments in embeddings of time series and dynamic networks. We start out with traditional principal components and then look at extensions to dynamic factor models for time series. Unlike principal components for time series, the literature on time‐varying nonlinear embedding is rather sparse. The most promising approaches in the literature is neural network based, and has recently performed well in forecasting competitions. We also touch on different forms of dynamics in topological data analysis (TDA). The last part of the article deals with embedding of dynamic networks, where we believe there is a gap between available theory and the behavior of most real world networks. We illustrate our review with two simulated examples. Throughout the review, we highlight differences between the static and dynamic case, and point to several open problems in the dynamic case.

Suggested Citation

  • Dag Tjøstheim & Martin Jullum & Anders Løland, 2023. "Some recent trends in embeddings of time series and dynamic networks," Journal of Time Series Analysis, Wiley Blackwell, vol. 44(5-6), pages 686-709, September.
    • Handle: RePEc:bla:jtsera:v:44:y:2023:i:5-6:p:686-709
    DOI: 10.1111/jtsa.12677
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    References listed on IDEAS

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