Advancements of Grey Systems Theory in Economics and Social Sciences

State of the art in Grey Systems Research in Economics and Social Sciences.- Grey Relational Analysis in Companies' Diagnosis.- Grey Models for Decision-Making Problem.- Risk Assessment using Grey Systems Theory.- Suppliers Selection and Optimal Resources Allocation using Grey-based Models.- Combined Grey-based Methods in Logistics.- Behavioral Assessment using Grey and Hybrid Approaches.- Grey Social Media Analysis and Grey Natural Language Processing.- Grey Clustering in Economic Analysis.- Hybrid-Intelligent Methods in Economics and Social Sciences.

Dr. Camelia Delcea is with the Bucharest University of Economic Studies, the Economic Cybernetics and Informatics Department, Bucharest, Romania. She received the Ph.D. degree in economic cybernetics and statistics from the same university. Her research interests include grey systems theory, agent-based modeling, operations research (optimizing the airplane boarding methods and improving the evacuation process), artificial intelligence systems, companies' financial and non-financial analysis, risk management, nonlinear and dynamic systems, consumer's behavior, online social networks, and sentiment analysis. Dr. Delcea is a member of the editorial advisory board of the Grey Systems: Theory and Application journal. She serves as associate editor for IEEE Access, PLOS ONE, Advances in Civil Engineering, Health & Social Care in the Community,  International Journal of Grey Systems, Management Sciences Business Decisions journals. Since 2009, Dr. Delcea has obtained 34 international and national awards ("Best paper award," "Georgescu Roegen" for excellent scientific research, "Excellent paper award," "Top reviewers," etc.) and has been invited to deliver a keynote speech on grey systems themes in 2013, 2016, and 2017 at the IEEE GSIS conference and in 2018 at the GSUA conference. She is an active member of the Grey Uncertainty Analysis Association.

 Dr. Liviu-Adrian Cotfas  is with the Bucharest University of Economic Studies, the Economic Cybernetics and Informatics Department, Bucharest, Romania. His research interests include grey systems theory, machine learning and deep learning techniques, natural language processing, social media analysis, agent-based modeling, recommender systems and semantic web. He has received the Ph.D. degree in economic informatics from the Bucharest University of Economic Studies (Romania). Over the time, Dr. Cotfas has published more than 40 articles in journals such as IEEE Access,