This book covers theoretical trends and practical aspects of soft computing and AI such as intelligent decision-making, control and modeling, deep learning, uncertain computation, natural language processing, and others. Applications in linguistics, education, various fields of business and industry are considered. This book presents the proceedings of the 12th Conference on Theory and Applications Soft Computing, Computing with Words and Perceptions and Artificial Intelligence, ICSCCW-2024, held in Budva, Montenegro, in August 26&27. This book is a useful guide for academics, practitioners, and graduates in fields of soft computing and AI. It allows for increasing of interest in development and applying of these paradigms in various real-life fields.