AI and Natural Language Proccessing -- Extracting Entities and Relations in Analyst Stock Ratings News -- MakedonASRDataset - A dataset for Speech Recognition in the Macedonian Language -- Bioinformatics -- Explainable machine learning unveils novel insights into breast cancer metastases sites bio-markers -- Implementation of the Time Series and the Convolutional Vision Transformers for Biological Signal Processing - Blood Pressure Estimation from Photoplethysmogram -- The Curious Case of Randomness in Deep Learning Models for Heartbeat Classification -- Dew Computing -- Disaster-Resilient Messaging using Dew Computing -- A Review of Dew and Edge Computing: Two Sides of a Modern Internet of Things Solution -- E-learning and E-services.-Unveiling Insights: Analyzing Application Logs to Enhance Autism Therapy Outcomes -- Image Processing -- Semantic Segmentation of Remote Sensing Images: Definition, Methods, Datasets and Applications -- Enhancing Knee Meniscus Damage Prediction from MRI Images with Machine Learning and Deep Learning Techniques -- Image Classification using Deep Neural Networks and Persistent Homology -- Network Science -- Understanding worldwide natural gas trade flow for 2017 to 2022: A network-based approach -- Identifying Drug - Disease Interactions Through Link Prediction in Heterogeneous Graphs -- Multiplex collaboration network of the Faculty of Computer Science and Engineering in Skopje -- Graph Neural Networks for Antisocial Behavior Detection on Twitter -- Theoretical Informatics -- On the Construction of Associative and Commutative Bilinear Multivariate Quadratic Quasigroups of Order 2n -- Introducing Probabilities in Networks of Polarized Splicing Processors.

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 organized in sections by topics as follows: AI and natural language processing; bioinformatics; dew computing; e-learning and e-services; image processing; network science; theoretical informatics.