As part of his “visiting researchers” program, Petar Djuric, professor at Stony Brook University, USA, came to TéSA for a month. On this occasion, he presented us on October 30, 2024 a first seminar on “Bayesian optimization of time-varying functions” and on November 14, a second seminar on “Explainable learning with Gaussian processes“, seminars that revealed to us the magic of Gaussian processes…