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Xinyi Sui

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#machine learning Preprint Aug 2026

CORAM: Coherent Orthogonal Rotation for Model Merging

Merging finetuned models combines specialized capabilities without joint training or access to the original data. Most methods operate by linear arithmetic in Euclidean weight space, which cannot carry the geometry of the update. Orthogonal Model Merging (OrthoMerge) uses a single orthogonal transform for each weight m...

Xinyi Sui, Zi-Ran Liu, Nam Ling et al. · 1 citation