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Although large-scale visual foundation models (VFMs) achieve remarkable performance in semantic understanding, they still underperform in instance-aware dense prediction tasks. They exhibit different biases in representation: for instance,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Yachan Guo , JoseLuis Gomez Zurita , Danna Xue , Yi Xiao , AntonioManuel Lopez Pena

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

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

Semantic segmentation with dense pixel-wise annotation has achieved excellent performance thanks to deep learning. However, the generalization of semantic segmentation in the wild remains challenging. In this paper, we address the problem…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 Wei Zhou , Yukang Wang , Jiajia Chu , Jiehua Yang , Xiang Bai , Yongchao Xu

Segmentation models are typically constrained by the categories defined during training. To address this, researchers have explored two independent approaches: adapting Vision-Language Models (VLMs) and leveraging synthetic data. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-13 Roberto Alcover-Couso , Marcos Escudero-Viñolo , Juan C. SanMiguel , Jesus Bescos

Recent deep networks achieved state of the art performance on a variety of semantic segmentation tasks. Despite such progress, these models often face challenges in real world `wild tasks' where large difference between labeled…

Computer Vision and Pattern Recognition · Computer Science 2018-10-26 Yang Zou , Zhiding Yu , B. V. K. Vijaya Kumar , Jinsong Wang

Model merging combines multiple fine-tuned checkpoints into a single model without additional training, offering an attractive approach to reusing models and efficiently improving performance. However, it remains unclear whether the…

Computation and Language · Computer Science 2026-03-31 Oğuz Kağan Hitit , Leander Girrbach , Zeynep Akata

Unsupervised domain adaptation (UDA) addresses the problem of distribution shift between the unlabelled target domain and labelled source domain. While the single target domain adaptation (STDA) is well studied in the literature for both 2D…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Ashish Sinha , Jonghyun Choi

Unsupervised Domain Adaptation (UDA) is essential for enabling semantic segmentation in new domains without requiring costly pixel-wise annotations. State-of-the-art (SOTA) UDA methods primarily use self-training with architecturally…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Beomseok Kang , Niluthpol Chowdhury Mithun , Abhinav Rajvanshi , Han-Pang Chiu , Supun Samarasekera

The scarcity and complexity of voxel-level annotations in 3D medical imaging present significant challenges, particularly due to the domain gap between labeled datasets from well-resourced centers and unlabeled datasets from less-resourced…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Haifan Gong , Yitao Wang , Yihan Wang , Jiashun Xiao , Xiang Wan , Haofeng Li

Fine-tuning pretrained models has become a standard pathway to achieve state-of-the-art performance across a wide range of domains, leading to a proliferation of task-specific model variants. As the number of such specialized models…

Machine Learning · Computer Science 2026-02-26 Pietro Buzzega , Riccardo Salami , Angelo Porrello , Simone Calderara

With the rapid growth of deep learning, there is an increasing availability of open-source models for various tasks. However, single fine-tuned models often fall short of meeting the diverse needs of users. Model merging has thus emerged as…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Shenghe Zheng , Hongzhi Wang

Deep learning based medical image diagnosis has shown great potential in clinical medicine. However, it often suffers two major difficulties in practice: 1) only limited labeled samples are available due to expensive annotation costs over…

Machine Learning · Computer Science 2019-11-19 Yifan Zhang , Ying Wei , Peilin Zhao , Shuaicheng Niu , Qingyao Wu , Mingkui Tan , Junzhou Huang

Unsupervised domain adaptation (UDA) for nuclei instance segmentation is important for digital pathology, as it alleviates the burden of labor-intensive annotation and domain shift across datasets. In this work, we propose a Cycle…

Computer Vision and Pattern Recognition · Computer Science 2020-05-06 Dongnan Liu , Donghao Zhang , Yang Song , Fan Zhang , Lauren O'Donnell , Heng Huang , Mei Chen , Weidong Cai

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

Averaging neural network parameters is an intuitive method for fusing the knowledge of two independent models. It is most prominently used in federated learning. If models are averaged at the end of training, this can only lead to a good…

Machine Learning · Computer Science 2024-03-20 Linara Adilova , Maksym Andriushchenko , Michael Kamp , Asja Fischer , Martin Jaggi

In this paper, we tackle the problem of one-shot unsupervised domain adaptation (OSUDA) for semantic segmentation where the segmentors only see one unlabeled target image during training. In this case, traditional unsupervised domain…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Xinyi Wu , Zhenyao Wu , Yuhang Lu , Lili Ju , Song Wang

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

Recent works have correlated Masked Image Modeling (MIM) with consistency regularization in Unsupervised Domain Adaptation (UDA). However, they merely treat masking as a special form of deformation on the input images and neglect the…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Jiawen Wang , Yinda Chen , Xiaoyu Liu , Che Liu , Dong Liu , Jianqing Gao , Zhiwei Xiong

Model merging, which combines multiple models into a single model, has gained popularity in recent years. By efficiently integrating the capabilities of various models, this significantly reduces the parameter count and memory usage.…

Machine Learning · Computer Science 2025-02-11 Weiyu Chen , James Kwok