About the Authors

Víctor Sevillano

Roles Investigation, Methodology, Software, Visualization, Writing – original draft

Affiliation Technical Superior School of Computer Engineering, Universidad Nacional de Educación a Distancia – UNED, Madrid, Spain

José L. Aznarte

Roles Conceptualization, Investigation, Methodology, Resources, Supervision, Validation, Writing – review & editing

jlaznarte@dia.uned.es

Affiliation Artificial Intelligence Department, Universidad Nacional de Educación a Distancia – UNED, Madrid, Spain

Competing Interests

The authors have declared that no competing interests exist.