Identifying, exploring, and interpreting time series shapes in multivariate time intervals

We introduce a concept of episode referring to a time interval in the development of a dynamic phenomenon that is characterized by multiple time-variant attributes. A data structure representing a single episode is a multivariate time series. To analyse collections of episodes, we propose an approac...

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Published inVisual informatics (Online) Vol. 7; no. 1; pp. 77 - 91
Main Authors Shirato, Gota, Andrienko, Natalia, Andrienko, Gennady
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2023
Elsevier
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Abstract We introduce a concept of episode referring to a time interval in the development of a dynamic phenomenon that is characterized by multiple time-variant attributes. A data structure representing a single episode is a multivariate time series. To analyse collections of episodes, we propose an approach that is based on recognition of particular patterns in the temporal variation of the variables within episodes. Each episode is thus represented by a combination of patterns. Using this representation, we apply visual analytics techniques to fulfil a set of analysis tasks, such as investigation of the temporal distribution of the patterns, frequencies of transitions between the patterns in episode sequences, and co-occurrences of patterns of different variables within same episodes. We demonstrate our approach on two examples using real-world data, namely, dynamics of human mobility indicators during the COVID-19 pandemic and characteristics of football team movements during episodes of ball turnover.
AbstractList We introduce a concept of episode referring to a time interval in the development of a dynamic phenomenon that is characterized by multiple time-variant attributes. A data structure representing a single episode is a multivariate time series. To analyse collections of episodes, we propose an approach that is based on recognition of particular patterns in the temporal variation of the variables within episodes. Each episode is thus represented by a combination of patterns. Using this representation, we apply visual analytics techniques to fulfil a set of analysis tasks, such as investigation of the temporal distribution of the patterns, frequencies of transitions between the patterns in episode sequences, and co-occurrences of patterns of different variables within same episodes. We demonstrate our approach on two examples using real-world data, namely, dynamics of human mobility indicators during the COVID-19 pandemic and characteristics of football team movements during episodes of ball turnover.
Author Andrienko, Gennady
Shirato, Gota
Andrienko, Natalia
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Keywords Multivariate time series
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Snippet We introduce a concept of episode referring to a time interval in the development of a dynamic phenomenon that is characterized by multiple time-variant...
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SubjectTerms Multivariate time series
Temporal patterns
Time intervals
Title Identifying, exploring, and interpreting time series shapes in multivariate time intervals
URI https://dx.doi.org/10.1016/j.visinf.2023.01.001
https://doaj.org/article/cca4e5123cda45d78ae5317aa628f190
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