This book includes 46 scientific papers presented at the conference and reflecting the latest research in the fields of data mining, machine learning and decision-making. The international scientific conference ¿Intellectual Systems of Decision-Making and Problems of Computational Intelligence¿ was held in the Kherson region, Ukraine, from May 25 to 29, 2020. The papers are divided into three sections: ¿Analysis and Modeling of Complex Systems and Processes,¿ ¿Theoretical and Applied Aspects of Decision-Making Systems¿ and ¿Computational Intelligence and Inductive Modeling.¿ The book will be of interest to scientists and developers specialized in the fields of data mining, machine learning and decision-making systems.