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Model merging is a flexible and computationally tractable approach to merge single-task checkpoints into a multi-task model. Prior work has solely focused on constrained multi-task settings where there is a one-to-one mapping between a…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Juan Garcia Giraldo , Nikolaos Dimitriadis , Ke Wang , Pascal Frossard

Model merging aims to combine multiple fine-tuned models into a single set of weights that performs well across all source tasks. While prior work has shown that merging can approximate the performance of individual fine-tuned models for…

Machine Learning · Computer Science 2025-10-17 Mohammadsajad Alipour , Mohammad Mohammadi Amiri

Multi-task learning (MTL) aims to empower a model to tackle multiple tasks simultaneously. A recent development known as task arithmetic has revealed that several models, each fine-tuned for distinct tasks, can be directly merged into a…

Machine Learning · Computer Science 2024-05-29 Enneng Yang , Zhenyi Wang , Li Shen , Shiwei Liu , Guibing Guo , Xingwei Wang , Dacheng Tao

Fine-tuning pre-trained models provides significant advantages in downstream performance. The ubiquitous nature of pre-trained models such as BERT and its derivatives in natural language processing has also led to a proliferation of…

Computation and Language · Computer Science 2024-05-06 Thennal D K , Ganesh Nathan , Suchithra M S

Model merging is an efficient post-training strategy for integrating knowledge from multiple finetuned checkpoints of a shared foundation model. Existing methods operate in the parameter space, combining task vectors to mitigate conflicts,…

Machine Learning · Computer Science 2025-10-27 Kexuan Shi , Yandong Wen , Weiyang Liu

Task arithmetic enables efficient model editing by representing task-specific changes as vectors in parameter space. Task arithmetic typically assumes that the source and target models are initialized from the same pre-trained parameters.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Kazuhiko Kawamoto , Atsuhiro Endo , Hiroshi Kera

Typical deep visual recognition models are capable of performing the one task they were trained on. In this paper, we tackle the extremely difficult problem of combining distinct models with different initializations, each solving a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 George Stoica , Daniel Bolya , Jakob Bjorner , Pratik Ramesh , Taylor Hearn , Judy Hoffman

Deep model merging represents an emerging research direction that combines multiple fine-tuned models to harness their specialized capabilities across different tasks and domains. Current model merging techniques focus on merging all…

Machine Learning · Computer Science 2025-01-17 Anke Tang , Enneng Yang , Li Shen , Yong Luo , Han Hu , Bo Du , Dacheng Tao

Accurate and efficient perception is essential for autonomous driving, where segmentation tasks such as drivable-area and lane segmentation provide critical cues for motion planning and control. However, achieving high segmentation accuracy…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Minh-Khoi Do , Huy Che , Dinh-Duy Phan , Duc-Khai Lam , Duc-Lung Vu

Model merging combines fine-tuned checkpoints into a single multi-task model without retraining. Existing methods - such as task arithmetic, model soups, TIES, and DARE - are computationally efficient and empirically successful, but rely on…

Machine Learning · Computer Science 2026-05-29 Bethan Evans , Benjamin Etheridge , Stephen Roberts , Jared Tanner

Training large neural networks and merging task-specific models both exploit low-rank structure and require parameter importance estimation, yet these challenges have been pursued in isolation. Current workflows compute curvature…

Machine Learning · Computer Science 2026-03-30 Alireza Moayedikia , Alicia Troncoso

Multi-Task Learning is a learning paradigm that uses correlated tasks to improve performance generalization. A common way to learn multiple tasks is through the hard parameter sharing approach, in which a single architecture is used to…

Machine Learning · Computer Science 2022-04-15 Angelica Tiemi Mizuno Nakamura , Denis Fernando Wolf , Valdir Grassi

Multi-task learning improves generalization, but when does it reduce the model capacity required to learn? We provide a systematic study of how joint training affects the learning transition, the minimum model size at which a task can be…

Machine Learning · Computer Science 2026-02-03 Csaba Both , Benjamin Hoover , Hendrik Strobelt , Dmitry Krotov , Daniel Karl I. Weidele , Mauro Martino , Nima Dehmamy

Recently, model merging techniques have surfaced as a solution to combine multiple single-talent models into a single multi-talent model. However, previous endeavors in this field have either necessitated additional training or fine-tuning…

Computer Vision and Pattern Recognition · Computer Science 2024-03-18 Zhengqi Xu , Ke Yuan , Huiqiong Wang , Yong Wang , Mingli Song , Jie Song

Task-based programming models have proven to be a robust and versatile way to approach development of applications for distributed environments. They provide natural programming patterns with high performance. However, execution on this…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-08-08 Alex Barcelo , Anna Queralt , Toni Cortes

Transformer models have revolutionized AI tasks, but their large size hinders real-world deployment on resource-constrained and latency-critical edge devices. While binarized Transformers offer a promising solution by significantly reducing…

Machine Learning · Computer Science 2025-05-13 Yuhao Ji , Chao Fang , Shaobo Ma , Haikuo Shao , Zhongfeng Wang

The rapid development of AI systems has been greatly influenced by the emergence of foundation models. A common approach for targeted problems involves fine-tuning these pre-trained foundation models for specific target tasks, resulting in…

Machine Learning · Computer Science 2024-08-13 MohammadReza Davari , Eugene Belilovsky

Model merging aims to integrate the strengths of multiple fine-tuned models into a unified model while preserving task-specific capabilities. Existing methods, represented by task arithmetic, are typically classified into global- and…

Machine Learning · Computer Science 2025-06-17 Kunda Yan , Min Zhang , Sen Cui , Zikun Qu , Bo Jiang , Feng Liu , Changshui Zhang

Diffusion models have achieved remarkable success across a range of generative tasks. Recent efforts to enhance diffusion model architectures have reimagined them as a form of multi-task learning, where each task corresponds to a denoising…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Byeongjun Park , Hyojun Go , Jin-Young Kim , Sangmin Woo , Seokil Ham , Changick Kim

Transfer learning approaches have shown to significantly improve performance on downstream tasks. However, it is common for prior works to only report where transfer learning was beneficial, ignoring the significant trial-and-error required…

Machine Learning · Computer Science 2022-09-09 Alexander Pugantsov , Richard McCreadie