Modeling Decisions for Artificial Intelligence

This book constitutes the refereed proceedings of the 23rd International Conference on Modeling Decisions for Artificial Intelligence, MDAI 2026, held in Vic, Spain, during September 7-9, 2026.The 31 full papers included in this volume were carefully reviewed and selected from 80 submissions. The papers cover the following topical sections: Aggregation Operators, Fuzzy Measures and Integrals; Uncertainty and reasoning; Privacy and security; and Data science.