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Task Alignment: A Simple Proxy for Practical Model Merging Across Diverse Vision Tasks

arxiv.org/abs/2604.12935

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Updated 2 h ago · first seen 11 Sept 2026

paper_01M294H38ASXGW2NZX5CPY42M8

Published
11 Sept 2026
T1 · 2 h ago
arXiv
2604.12935
T1 · 2 h ago
Category
cs.CV
T1 · 2 h ago

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Abstractabstract1

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Efficiently merging several models fine-tuned for different tasks, but stemming from the same pretrained base model, is of great practical interest. Despite extensive prior work, most evaluations of model merging in computer vision are restricted to image classification using CLIP, where different classification datasets define different tasks. In this work, our goal is to make model merging more practical and show its relevance on challenging scenarios beyond this specific setting. In most vision scenarios, different tasks rely on trainable and usually heterogeneous decoders. Differently from previous studies with frozen decoders, where merged models can be evaluated right away, the non-trivial cost of decoder training renders hyperparameter selection based on downstream performance impractical. To address this, we introduce the task alignment proxy, and show how it can be used to speed up hyperparameter selection by orders of magnitude while retaining performance. Equipped with the task alignment proxy, we extend the applicability of model merging to multi-task vision models beyond CLIP-based classification. Project page: https://europe.naverlabs.com/task-alignmentcurrentcurrentarXiv (Atom API + RSS)T1highdeterministic

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