Unsupervised physics-informed neural network in reaction-diffusion biology models (Ulcerative colitis and Crohn's disease cases) A preliminary study. - Ahmed Rebai; Louay Boukhris; Radhi Toujani; Ahmed Gueddiche; Fayad Ali Banna; Fares Souissi; Ahmed Lasram; Elyes Ben Rayana; Hatem Zaag (CoRR, 2023)