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Related papers: Multi-Task Model Merging via Adaptive Weight Disen…

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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

Task arithmetic provides an efficient, training-free way to edit pre-trained models, yet lacks a fundamental theoretical explanation for its success. The existing concept of ``weight disentanglement" describes the ideal outcome of…

Artificial Intelligence · Computer Science 2026-04-21 Shangge Liu , Yuehan Yin , Lei Wang , Qi Fan , Yinghuan Shi , Wenbin Li , Yang Gao , Dacheng Tao

Merging models becomes a fundamental procedure in some applications that consider model efficiency and robustness. The training randomness or Non-I.I.D. data poses a huge challenge for averaging-based model fusion. Previous research efforts…

Artificial Intelligence · Computer Science 2024-08-23 Yichu Xu , Xin-Chun Li , Le Gan , De-Chuan Zhan

Federated Multi-Task Learning (FMTL) enables multiple clients performing heterogeneous tasks without exchanging their local data, offering broad potential for privacy preserving multi-task collaboration. However, most existing methods focus…

Machine Learning · Computer Science 2025-06-02 Yipan Wei , Yuchen Zou , Yapeng Li , Bo Du

Current methods for editing pre-trained models face significant challenges, primarily high computational costs and limited scalability. Task arithmetic has recently emerged as a promising solution, using simple arithmetic…

Machine Learning · Computer Science 2025-11-25 Jinping Wang , Zhiqiang Gao , Dinggen Zhang , Zhiwu Xie

Multi-task learning commonly encounters competition for resources among tasks, specifically when model capacity is limited. This challenge motivates models which allow control over the relative importance of tasks and total compute cost…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Dripta S. Raychaudhuri , Yumin Suh , Samuel Schulter , Xiang Yu , Masoud Faraki , Amit K. Roy-Chowdhury , Manmohan Chandraker

Transfer learning has become a powerful tool to initialize deep learning models to achieve faster convergence and higher performance. This is especially useful in the medical imaging analysis domain, where data scarcity limits possible…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Ibrahim Almakky , Santosh Sanjeev , Anees Ur Rehman Hashmi , Mohammad Areeb Qazi , Hu Wang , Mohammad Yaqub

Model merging dramatically reduces storage and computational resources by combining multiple expert models into a single multi-task model. Although recent model merging methods have shown promising results, they struggle to maintain…

Machine Learning · Computer Science 2025-06-04 Zijing Wang , Xingle Xu , Yongkang Liu , Yiqun Zhang , Peiqin Lin , Shi Feng , Xiaocui Yang , Daling Wang , Hinrich Schütze

Task arithmetic is a straightforward yet highly effective strategy for model merging, enabling the resultant model to exhibit multi-task capabilities. Recent research indicates that models demonstrating linearity enhance the performance of…

Machine Learning · Computer Science 2025-04-16 Rui Dai , Sile Hu , Xu Shen , Yonggang Zhang , Xinmei Tian , Jieping Ye

Multi-task large language models (MTLLMs) are important for many applications at the wireless edge, where users demand specialized models to handle multiple tasks efficiently. However, training MTLLMs is complex and exhaustive, particularly…

Signal Processing · Electrical Eng. & Systems 2026-02-09 Aladin Djuhera , Vlad C. Andrei , Mohsen Pourghasemian , Haris Gacanin , Holger Boche , Walid Saad

Large pre-trained models have enabled significant advances in machine learning and served as foundation components. Model fusion methods, such as task arithmetic, have been proven to be powerful and scalable to incorporate fine-tuned…

Machine Learning · Computer Science 2024-03-12 Anke Tang , Li Shen , Yong Luo , Yibing Zhan , Han Hu , Bo Du , Yixin Chen , Dacheng Tao

Multi-task learning (MTL) trains deep neural networks to optimize several objectives simultaneously using a shared backbone, which leads to reduced computational costs, improved data efficiency, and enhanced performance through cross-task…

Machine Learning · Computer Science 2025-09-30 Hoang Phan , Lam Tran , Quyen Tran , Ngoc N. Tran , Tuan Truong , Qi Lei , Nhat Ho , Dinh Phung , Trung Le

Models trained on different datasets can be merged by a weighted-averaging of their parameters, but why does it work and when can it fail? Here, we connect the inaccuracy of weighted-averaging to mismatches in the gradients and propose a…

Machine Learning · Computer Science 2024-08-26 Nico Daheim , Thomas Möllenhoff , Edoardo Maria Ponti , Iryna Gurevych , Mohammad Emtiyaz Khan

Model merging enables the reuse of fine-tuned models without joint training or access to original data. Dynamic merging further improves flexibility by selectively activating task-relevant parameters and efficiently composing experts across…

Machine Learning · Computer Science 2026-05-20 Guodong Du , Wanyu Lin

Merging finetuned Large Language Models (LLMs) has become increasingly important for integrating diverse capabilities into a single unified model. However, prevailing model merging methods rely on linear arithmetic in Euclidean space, which…

Machine Learning · Computer Science 2026-02-06 Sihan Yang , Kexuan Shi , Weiyang Liu

Model merging provides a cost-effective and data-efficient combination of specialized deep neural networks through parameter integration. This technique leverages expert models across downstream tasks without requiring retraining. Most…

Machine Learning · Computer Science 2025-10-17 Levy Chaves , Eduardo Valle , Sandra Avila

In multitask learning, conflicts between task gradients are a frequent issue degrading a model's training performance. This is commonly addressed by using the Gradient Projection algorithm PCGrad that often leads to faster convergence and…

Machine Learning · Computer Science 2025-08-07 Christian Bohn , Ido Freeman , Hasan Tercan , Tobias Meisen

Multi-task learning solves multiple correlated tasks. However, conflicts may exist between them. In such circumstances, a single solution can rarely optimize all the tasks, leading to performance trade-offs. To arrive at a set of optimized…

Artificial Intelligence · Computer Science 2024-03-26 Lu Bai , Abhishek Gupta , Yew-Soon Ong

With the rise of neural networks in various domains, multi-task learning (MTL) gained significant relevance. A key challenge in MTL is balancing individual task losses during neural network training to improve performance and efficiency…

Machine Learning · Computer Science 2024-08-16 Lukas Kirchdorfer , Cathrin Elich , Simon Kutsche , Heiner Stuckenschmidt , Lukas Schott , Jan M. Köhler

Task arithmetic has emerged as a promising approach for editing models by representing task-specific knowledge as composable task vectors. However, existing methods rely on network linearization to derive task vectors, leading to…

Machine Learning · Computer Science 2025-04-04 Leonardo Iurada , Marco Ciccone , Tatiana Tommasi
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