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Merging by Matching Models in Task Parameter Subspaces
April 16, 2024, 4:44 a.m. | Derek Tam, Mohit Bansal, Colin Raffel
cs.LG updates on arXiv.org arxiv.org
Abstract: Model merging aims to cheaply combine individual task-specific models into a single multitask model. In this work, we view past merging methods as leveraging different notions of a ''task parameter subspace'' in which models are matched before being merged. We connect the task parameter subspace of a given model to its loss landscape and formalize how this approach to model merging can be seen as solving a linear system of equations. While past work has …
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