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Model merging constructs versatile models by integrating task-specific models without requiring labeled data or expensive joint retraining. Although recent methods improve adaptability to heterogeneous tasks by generating customized merged…

Machine Learning · Computer Science 2026-02-09 Haiyun Qiu , Xingyu Wu , Liang Feng , Kay Chen Tan

Model merging aims to efficiently combine the weights of multiple expert models, each trained on a specific task, into a single multi-task model, with strong performance across all tasks. When applied to all but the last layer of weights,…

Machine Learning · Computer Science 2024-10-17 Ekansh Sharma , Daniel M. Roy , Gintare Karolina Dziugaite

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

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…

Machine Learning · Computer Science 2024-04-16 Derek Tam , Mohit Bansal , Colin Raffel

Model merging combines independently trained models into a single multi-task model. However, most existing approaches focus primarily on avoiding task interference. We argue that its greater potential lies in enabling task synergy, where…

Machine Learning · Computer Science 2026-05-25 Aecheon Jung , Seunghwan Lee , Dongyoon Han , Sungeun Hong

Model merging is a technique that combines multiple large pretrained models into a single model with enhanced performance and broader task adaptability. It has gained popularity in large pretrained model development due to its ability to…

Machine Learning · Computer Science 2024-09-30 Yu Zhou , Xingyu Wu , Jibin Wu , Liang Feng , Kay Chen Tan

Meta-learning enables algorithms to quickly learn a newly encountered task with just a few labeled examples by transferring previously learned knowledge. However, the bottleneck of current meta-learning algorithms is the requirement of a…

Machine Learning · Computer Science 2022-03-18 Huaxiu Yao , Linjun Zhang , Chelsea Finn

Model fusion seeks to combine independently trained neural networks into a single model without retraining, but is complicated by representational divergence arising from permutation invariance, random initialization, and heterogeneous…

Machine Learning · Computer Science 2026-05-29 Phoomraphee Luenam , Andreas Spanopoulos , Amit Sant , Thomas Hofmann , Sotiris Anagnostidis , Sidak Pal Singh

The success of pretrain-finetune paradigm brings about the release of numerous model weights. In this case, merging models finetuned on different tasks to enable a single model with multi-task capabilities is gaining increasing attention…

Machine Learning · Computer Science 2024-09-30 Chenyu Huang , Peng Ye , Tao Chen , Tong He , Xiangyu Yue , Wanli Ouyang

Multi-task learning (MTL) is often achieved by merging datasets before fine-tuning, but the growing availability of fine-tuned models has led to new approaches such as model merging via task arithmetic. A major challenge in this setting is…

Machine Learning · Computer Science 2025-09-15 Brahim Touayouch , Loïc Fosse , Géraldine Damnati , Gwénolé Lecorvé

Neural network based models have achieved impressive results on various specific tasks. However, in previous works, most models are learned separately based on single-task supervised objectives, which often suffer from insufficient training…

Computation and Language · Computer Science 2016-09-26 Pengfei Liu , Xipeng Qiu , Xuanjing Huang

Recent advances in decentralized deep learning algorithms have demonstrated cutting-edge performance on various tasks with large pre-trained models. However, a pivotal prerequisite for achieving this level of competitiveness is the…

Machine Learning · Computer Science 2024-04-15 Nastaran Saadati , Minh Pham , Nasla Saleem , Joshua R. Waite , Aditya Balu , Zhanhong Jiang , Chinmay Hegde , Soumik Sarkar

Combining multiple machine learning models has long been a technique for enhancing performance, particularly in distributed settings. Traditional approaches, such as model ensembles, work well, but are expensive in terms of memory and…

Machine Learning · Computer Science 2024-12-23 Albert Manuel Orozco Camacho , Stefan Horoi , Guy Wolf , Eugene Belilovsky

An increasing number of well-trained deep networks have been released online by researchers and developers, enabling the community to reuse them in a plug-and-play way without accessing the training annotations. However, due to the large…

Machine Learning · Computer Science 2019-06-26 Sihui Luo , Xinchao Wang , Gongfan Fang , Yao Hu , Dapeng Tao , Mingli Song

Model merging aims to integrate multiple task-specific fine-tuned models derived from a shared pre-trained checkpoint into a single multi-task model without additional training. Despite extensive research, task interference remains a major…

Machine Learning · Computer Science 2026-02-25 Longhua Li , Lei Qi , Qi Tian , Xin Geng

Model merging is an efficient empowerment technique in the machine learning community that does not require the collection of raw training data and does not require expensive computation. As model merging becomes increasingly prevalent…

Machine Learning · Computer Science 2026-01-01 Enneng Yang , Li Shen , Guibing Guo , Xingwei Wang , Xiaochun Cao , Jie Zhang , Dacheng Tao

Recent years have witnessed a remarkable success of large deep learning models. However, training these models is challenging due to high computational costs, painfully slow convergence, and overfitting issues. In this paper, we present…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Zanlin Ni , Yulin Wang , Jiangwei Yu , Haojun Jiang , Yue Cao , Gao Huang

Today's generative models are capable of synthesizing high-fidelity images, but each model specializes on a specific target domain. This raises the need for model merging: combining two or more pretrained generative models into a single…

Machine Learning · Computer Science 2023-03-21 Omri Avrahami , Dani Lischinski , Ohad Fried

Adapting general-purpose language models to new skills is currently an expensive process that must be repeated as new instruction datasets targeting new skills are created, or can cause the models to forget older skills. In this work, we…

Computation and Language · Computer Science 2024-10-18 Jacob Morrison , Noah A. Smith , Hannaneh Hajishirzi , Pang Wei Koh , Jesse Dodge , Pradeep Dasigi

Deep imitation learning enables robots to learn from expert demonstrations to perform tasks such as lane following or obstacle avoidance. However, in the traditional imitation learning framework, one model only learns one task, and thus it…

Computer Vision and Pattern Recognition · Computer Science 2018-08-19 Junhong Xu , Qiwei Liu , Hanqing Guo , Aaron Kageza , Saeed AlQarni , Shaoen Wu