Multivariate times series classification through an interpretable representation Baldán Lozano, Francisco Javier Benítez Sánchez, José Manuel Multivariate Time series features Complexity measures Time series interpretation Classification This research has been partially funded by the following grants: TIN2016-81113-R from the Spanish Ministry of Economy and Competitiveness, and P12-TIC-2958 from Andalusian Regional Government, Spain. Francisco J. Baldan holds the FPI grant BES-2017-080137 from the Spanish Ministry of Economy and Competitiveness. Multivariate time series classification is a machine learning task with increasing importance due to the proliferation of information sources in different domains (economy, health, energy, crops, etc.). Univariate methods lack the ability to capture the relationships between the different variables that compose a multivariate time series and therefore cannot be directly extrapolated to multivariate environments. Despite the good performance and competitive results of the multivariate proposals published to date, they are hard to interpret due to their high complexity. In this paper, we propose a multivariate time series classification method based on an alternative representation of the time series, composed of a set of 41 descriptive time series features, in order to improve the interpretability of time series and results obtained. Our proposal uses traditional classifiers over the extracted features to look for relationships between the different variables that form a multivariate time series. We have selected four state-of-the-art algorithms as base classifiers to evaluate our method. We have tested our proposal on the complete University of East Anglia repository, obtaining highly interpretable results capable of explaining the relationships between the features that compose the time series and achieving performance results statistically indistinguishable from the best algorithms of the state-of-the-art. 2021-07-05T10:43:01Z 2021-07-05T10:43:01Z 2021-05-18 info:eu-repo/semantics/article Francisco J. Baldán, José M. Benítez, Multivariate times series classification through an interpretable representation, Information Sciences, Volume 569, 2021, Pages 596-614, ISSN 0020-0255, [https://doi.org/10.1016/j.ins.2021.05.024] http://hdl.handle.net/10481/69514 10.1016/j.ins.2021.05.024 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Elsevier