Part I: Theory -- Mathematical base for Artificial Intelligence -- Collection and decomposition integrals in multicriteria-decision support -- A refinement of the Jensen type inequality for the pseudo-integral -- Convolutional Neural Networks Hyperparameters Tuning -- The Case for Quantifying Artificial General Intelligence with Entropy Semifields -- Fuzzy metrics and its applications in image processing -- Aggregation operations and distributivity equations -- The use of Fuzzy Logic in Various Combinatorial Optimization problems -- Improved BAT Algorithm for Solving Job Scheduling Problem in Hotels and Restaurants -- Part II: Applications -- Explainable machine learning prediction of PCB-138 behavior patterns in edible fish from Croatian Adriatic -- Patterns of PCB-138 occurrence in the breast milk of primiparae and multiparae using SHapley Additive exPlanations analysis -- What information on volatile organic compounds can be obtained from the data of a single measurement site through the use of artificial intelligence? -- The Linear Fuzzy Space: Theory and Applications -- Image fuzzy segmentation using aggregated distance functions and pixel descriptors -- A generative model for the creation of large synthetic image datasets used for distance estimation -- Appraisal of Apartments in Belgrade using Hedonic Regression: Model Specification, Predictive Performance, Suitability for Mass Appraisal, and Comparison with Machine Learning Methods -- Conversational agents for learning foreign languages a survey -- Intelligent interactive technologies for mental well-being.