Machine Learning, Optimization, and Data Science : 7th International Conference, LOD 2021, Grasmere, UK, October 4-8, 2021, Revised Selected Papers, Part II - Nicosia, Giuseppe; Giuffrida, Giovanni; Jansen, Giorgio; La Malfa, Emanuele; La Malfa, Gabriele; Ojha, Varun; Pardalos, Panos M.; Umeton, Renato (Cham Springer International Publishing AG, 2022)