Why Prototypes Collapse: Diagnosing and Preventing Partial Collapse in Prototypical Self-Supervised Learning - Arteaga, Gabriel Y.; Aasan, Marius; Chakraborty, Rwiddhi; Hjelkrem-Tan, Martine; Santos Silva, Thalles; Kampffmeyer, Michael; Ramírez Rivera, Adín (International Conference on Learning Representations, 2026)