Text and Data Mining valid from 2020-05-01
Received: 15 February 2020
Accepted: 21 April 2020
First Online: 1 May 2020
Ethics approval and consent to participate
: Not applicable.
: HK is founder and managing director of CAM-D Technologies GmbH, Solingen, Germany. AZ is co-founder of GNWI–Gesellschaft für naturwissenschaftliche Informatik mbH, Dortmund, Germany.