Bridging Domains through Subspace-Aware Model Merging

ArXi:2603.05768v1 Announce Type: cross Model merging integrates multiple task-specific models into a single consolidated one. Recent research has made progress in improving merging performance for in-distribution or multi-task scenarios, but domain generalization in model merging remains underexplored. We investigate how merging models fine-tuned on distinct domains affects generalization to unseen domains.