@article{prototypefusionatrainingfreemultilayerap, title = {Prototype Fusion: A Training-Free Multi-Layer Approach to OOD Detection}, author = {Shreen Gul and Mohamed Elmahallawy and Ardhendu Tripathy and Sanjay Madria}, year = {2026}, eprint = {2603.23677}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2603.23677}, }