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Multi-task learning (MTL) aims at achieving a better model by leveraging data and knowledge from multiple tasks. However, MTL does not always work -- sometimes negative transfer occurs between tasks, especially when aggregating loosely…

Computation and Language · Computer Science 2023-05-24 Jingwei Ni , Zhijing Jin , Qian Wang , Mrinmaya Sachan , Markus Leippold

Although multi-task learning is widely applied in intelligent services, traditional multi-task modeling methods often require customized designs based on specific task combinations, resulting in a cumbersome modeling process. Inspired by…

Machine Learning · Computer Science 2025-04-15 Jingxuan Zhou , Weidong Bao , Ji Wang , Zhengyi Zhong , Dayu Zhang

Deep learning based models are used regularly in every applications nowadays. Generally we train a single model on a single task. However, we can train multiple tasks on a single model under multi-task learning settings. This provides us…

Machine Learning · Computer Science 2023-03-14 Aminul Huq , Mst Tasnim Pervin

We investigate multi-task learning approaches that use a shared feature representation for all tasks. To better understand the transfer of task information, we study an architecture with a shared module for all tasks and a separate output…

Machine Learning · Computer Science 2020-05-05 Sen Wu , Hongyang R. Zhang , Christopher Ré

Supervised fine-tuning (SFT) is crucial for adapting Large Language Models (LLMs) to specific tasks. In this work, we demonstrate that the order of training data can lead to significant training imbalances, potentially resulting in…

Computation and Language · Computer Science 2024-10-08 Yiming Ju , Ziyi Ni , Xingrun Xing , Zhixiong Zeng , hanyu Zhao , Siqi Fan , Zheng Zhang

Predicting multiple heterogeneous biological and medical targets is a challenge for traditional deep learning models. In contrast to single-task learning, in which a separate model is trained for each target, multi-task learning (MTL)…

Machine Learning · Computer Science 2022-05-31 Raquel Aoki , Frederick Tung , Gabriel L. Oliveira

Model merging has emerged as a promising approach for unifying independently fine-tuned models into an integrated framework, significantly enhancing computational efficiency in multi-task learning. Recently, several SVD-based techniques…

Machine Learning · Computer Science 2026-03-03 Chanhyuk Lee , Jiho Choi , Chanryeol Lee , Donggyun Kim , Seunghoon Hong

Task arithmetic has emerged as a simple yet powerful technique for model merging, enabling the combination of multiple finetuned models into one. Despite its empirical success, a clear theoretical explanation of why and when it works is…

This paper presents a novel method that allows a machine learning algorithm following the transformation-based learning paradigm \cite{brill95:tagging} to be applied to multiple classification tasks by training jointly and simultaneously on…

Computation and Language · Computer Science 2007-05-23 Radu Florian , Grace Ngai

While fine-tuning pretrained models has become common practice, these models often underperform outside their specific domains. Recently developed model merging techniques enable the direct integration of multiple models, each fine-tuned…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Guodong Du , Junlin Lee , Jing Li , Runhua Jiang , Yifei Guo , Shuyang Yu , Hanting Liu , Sim Kuan Goh , Ho-Kin Tang , Daojing He , Min Zhang

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

Learning-to-learn or meta-learning leverages data-driven inductive bias to increase the efficiency of learning on a novel task. This approach encounters difficulty when transfer is not advantageous, for instance, when tasks are considerably…

Machine Learning · Computer Science 2019-06-20 Ghassen Jerfel , Erin Grant , Thomas L. Griffiths , Katherine Heller

Model merging has attracted significant attention as a powerful paradigm for model reuse, facilitating the integration of task-specific models into a singular, versatile framework endowed with multifarious capabilities. Previous studies,…

Machine Learning · Computer Science 2025-01-03 Zhengqi Xu , Han Zheng , Jie Song , Li Sun , Mingli Song

Fine-tuning pre-trained models with custom data leads to numerous expert models on specific tasks. Merging models into one universal model to empower multi-task ability refraining from data leakage has gained popularity. With the expansion…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Fanhu Zeng , Haiyang Guo , Fei Zhu , Li Shen , Hao Tang

Multi-task learning (MTL) is a machine learning technique aiming to improve model performance by leveraging information across many tasks. It has been used extensively on various data modalities, including electronic health record (EHR)…

Machine Learning · Computer Science 2020-07-21 Matthew B. A. McDermott , Bret Nestor , Evan Kim , Wancong Zhang , Anna Goldenberg , Peter Szolovits , Marzyeh Ghassemi

Recent methods aim to merge neural networks (NNs) with identical architectures trained on different tasks into a single multi-task model. While most works focus on the simpler setup of merging NNs initialized from a common pre-trained…

Machine Learning · Computer Science 2025-08-18 Edan Kinderman , Itay Hubara , Haggai Maron , Daniel Soudry

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

Multi-Task Learning (MTL) is widely-accepted in Natural Language Processing as a standard technique for learning multiple related tasks in one model. Training an MTL model requires having the training data for all tasks available at the…

Computation and Language · Computer Science 2023-02-23 Sudipta Kar , Giuseppe Castellucci , Simone Filice , Shervin Malmasi , Oleg Rokhlenko

The task of building footprint segmentation has been well-studied in the context of remote sensing (RS) as it provides valuable information in many aspects, however, difficulties brought by the nature of RS images such as variations in the…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Burak Ekim , Elif Sertel

While the promises of Multi-Task Learning (MTL) are attractive, characterizing the conditions of its success is still an open problem in Deep Learning. Some tasks may benefit from being learned together while others may be detrimental to…

Machine Learning · Computer Science 2023-01-10 Raphael Azorin , Massimo Gallo , Alessandro Finamore , Dario Rossi , Pietro Michiardi