Gradient-informed MBO with constraint-aware graph refinement network for privacy-preserving federated mask R-CNN segmentation (GIMBO-CAGRN-FL). - Vidyullatha Pellakuri; Iacovos Ioannou; G. S. Pradeep Ghantasala; Vasos Vassiliou; Boddu Sekhar Babu (Expert Syst. Appl., 2026)