**About the Editors**

**Stanisław Drozd˙ z˙**, Professor, Present professor of physics and head of the Complex Systems Theory Department at Institute of Nuclear Physics (INP), Polish Academy of Sciences and professor of computer science at the Cracow University of Technology. He received an M.S. (1978) and Ph.D. (1982) in physics, both from Jagiellonian University in Krakow, ´ and a DSc (1988) in theoretical physics from INP. In 1994, he received the Polish state title of professor. His long-term scientific studies abroad include Forschungszentrum Juelich, Germany from 1983 to 1986 as a post-doc and from 1989 to 1991 as a senior scientist, as well as the University of Illinois at Urbana-Champaign, USA from 1993 to 1994 and Bonn University, Germany from 2001 to 2002 as a visiting professor. His research interests and activities include the quantum many-body problem, nonlinear dynamics, general aspects of complexity, brain-research-related issues, dynamics of financial markets, and quantitative linguistics.

**Jarosław Kwapien´**, Assoc. Prof., Graduated from Jagiellonian University in Krakow´ in 1995 with a Master's Degree in physics. He started his doctoral programme at the Institute of Nuclear Physics (INP), Polish Academy of Sciences and earned a Ph.D. degree in 2001 based on his work on topics at the interface between statistical physics and neuroscience. As a post-doctoral fellow at Forschungszentrum Juelich, Germany, he started his research on topics in the physics of financial markets (econophysics) and data science. Later, he entered a tenure track at INP and completed his habilitation in 2010, after which he obtained the position of Associate Professor. Recently, he has continued to publish works in econophysics, but also began an interest in complex networks, quantitative linguistics, and other interdisciplinary topics.

**Paweł Oświęcimka**, Assoc. Prof., Paweł O´swiecimka received an M.S. degree in physics from the AGH University of Science and Technology, Krakow, ´ Poland, in 2001, and Ph.D. and D.Sc. degrees in physics from Institute of Nuclear Physics (INP), Polish Academy of Sciences, Krakow, ´ in 2005 and 2015, respectively. Since 2016, he has been Associate Professor at the Complex Systems Theory Department INP. He also leads one of the research groups in the project on bio-inspired artificial neural networks at the Jagiellonian University and he is a lecturer at the Cracow University of Technology. His current research interests include interdisciplinary research in natural and social complex systems by means of advanced methods of time series analysis, with particular emphasis on multifractal analysis, complex network analysis, and modelling of multi-scaling processes. He is a Fellow of the Commission of Complex Systems at the Polish Academy of Arts and Sciences (PAU).
