Time series pattern identification by hierarchical community detection Leandro Anghinoni, Didier A. Vega-Oliveros, Thiago Christiano Silva and Liang Zhao Eur. Phys. J. Spec. Top., 230 14-15 (2021) 2775-2782 Published online: 03 June 2021 DOI: 10.1140/epjs/s11734-021-00163-4