Swarm learning for decentralized artificial intelligence in cancer histopathology - Nature MedicineArtificial intelligence (AI) can predict the presence of molecular alterations directly from routine histopathology slides. However, training robust AI systems requires large datasets for which data collection faces practical, ethical and legal obstacles. These obstacles could be overcome with swarm learning (SL), in which partners jointly train AI models while avoiding data transfer and monopolistic data governance.https://www.nature.com/articles/s41591-022-01768-5