This book includes high-quality papers presented at the Fourth International Conference on Data Science and Management (ICDSM 2025), organized by the Gandhi Institute for Education and Technology, Bhubaneswar, from December 19–20, 2025. It features research in which data science is used to facilitate the decision-making process in various application areas and covers a wide range of learning methods and their applications in several learning problems. The empirical studies, theoretical analyses and comparisons to psychological phenomena described contribute to the development of products to meet market demands. The work is presented in two volumes.