**About the Editors**

#### **Konstantinos Kotis**

Konstantinos Kotis (https://orcid.org/0000-0001-7838-9691) is currently a tenure track assistant professor at the University of the Aegean, Dept. of Cultural Informatics and Communication, i-Lab, and a research associate at the University of Piraeus, Dept. of Digital Systems, AI Lab. His research interests include: Knowledge/Ontology Engineering, Semantic Web technologies, Semantic Data Management, the Semantic Web of Things, and KG-based conversational AI (chatbots). He has published more than 90 papers in peer reviewed international journals and conferences (Google Scholar h-index 18; citations > 1600) and served as reviewer and PC member in several journals and conference events. He has also contributed to several national and European projects from different roles/positions. For more information, please visit: http://i-lab.aegean.gr/kotis.

#### **Dimitris Spiliotopoulos**

Dimitris Spiliotopoulos (https://orcid.org/0000-0003-3646-1362) is an assistant professor at the Department of Management Science and Technology, University of the Peloponnese, Greece. His research interests include HCI, data analysis, UX, recommender systems, design thinking, and interaction design. He has been involved in research projects in intelligent communication, cybersecurity, human factor design, and data analysis for more than 10 years. He has more than 100 publications in peer reviewed international journals and conference proceedings.
