Optimization, Learning Algorithms and Applications First International Conference, OL2A 2021, Bragança, Portugal, July 19–21, 2021, Revised Selected Papers - Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João P.; Teixeira, João P.; Pacheco, Maria F.; Alves, Paulo; Lopes, Rui P. (Springer International Publishing, 2021)