Time series analysis via network science: Concepts and algorithms Vanessa Freitas Silva, Maria Eduarda Silva, Pedro Ribeiro and Fernando Silva 2021

Abstract

There is nowadays a constant flux of data being generated and collected in all types of real world systems. These data sets are often indexed by time, space, or both requiring appropriate approaches to analyze the data. In univariate settings, time series analysis is a mature field. However, in multivariate contexts, time series analysis still presents many limitations. In order to address these issues, the last decade has brought approaches based on network science. These methods involve transforming an initial time series data set into one or more networks, which can be analyzed in depth to provide insight into the original time series. This review provides a comprehensive overview of existing mapping methods for transforming time series into networks for a wide audience of researchers and practitioners in machine learning, data mining, and time series. Our main contribution is a structured review of existing methodologies, identifying their main characteristics, and their differences. We describe the main conceptual approaches, provide authoritative references and give insight into their advantages and limitations in a unified way and language. We first describe the case of univariate time series, which can be mapped to single layer networks, and we divide the current mappings based on the underlying concept: visibility, transition, and proximity. We then proceed with multivariate time series discussing both single layer and multiple layer approaches. Although still very recent, this research area has much potential and with this survey we intend to pave the way for future research on the topic.

Digital Object Identifier (DOI)

doi 10.1002/widm.1404

Publication in PDF format

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Journal/Conference/Book

Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery

Reference (text)

Vanessa Freitas Silva, Maria Eduarda Silva, Pedro Ribeiro and Fernando Silva. Time series analysis via network science: Concepts and algorithms. In Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery, e1404, Wiley, March, 2021.

Bibtex

@article{ribeiro-WIDM2021,
  author = {Vanessa Freitas Silva and  Maria Eduarda Silva and  Pedro Ribeiro and Fernando Silva},
  title = {Time series analysis via network science: Concepts and algorithms},
  doi = {10.1002/widm.1404},
  journal = {Wiley Interdisciplinary Reviews: Data Mining and Knowledge Discovery},
  pages = {e1404},
  publisher = {Wiley},
  month = {March},
  year = {2021}
}