Classifying merger stages with adaptive deep learning and cosmological hydrodynamical simulations Rosa de Graaff, Berta Margalef-Bentabol, Lingyu Wang, Antonio La Marca, William J. Pearson, Vicente Rodriguez-Gomez and Mike Walmsley A&A, 697 (2025) A207 Published online: 19 May 2025 DOI: 10.1051/0004-6361/202452659