This book constitutes the refereed proceedings of the 15th International Conference on ICT Innovations 2023. Learning: Humans, Theory, Machines, and Data, ICT Innovations 2023, held in Ohrid, North Macedonia during September 24–26, 2023.The 17 full papers included in this book were carefully reviewed and selected from 52 submissions. They are organizedin sections by topicsas follows: AI and natural language processing; bioinformatics; dew computing; e-learning and e-services; image processing; network science; theoretical informatics. weiterlesen