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Graph Neural Networks (GNNs) have shown great success in various graph-based learning tasks. However, it often faces the issue of over-smoothing as the model depth increases, which causes all node representations to converge to a single…

Machine Learning · Computer Science 2026-04-13 Xin He , Yili Wang , Wenqi Fan , Xu Shen , Xin Juan , Rui Miao , Xin Wang

Convolutional neural networks and Transformer have made significant progresses in multi-modality medical image super-resolution. However, these methods either have a fixed receptive field for local learning or significant computational…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Zexin Ji , Beiji Zou , Xiaoyan Kui , Sebastien Thureau , Su Ruan

Graph neural networks (GNNs) have become the state of the art for various graph-related tasks and are particularly prominent in heterogeneous graphs (HetGs). However, several issues plague this paradigm: first, the difficulty in fully…

Machine Learning · Computer Science 2025-02-25 Xuqi Mao , Zhenying He , X. Sean Wang

Learning useful node and graph representations with graph neural networks (GNNs) is a challenging task. It is known that deep GNNs suffer from over-smoothing where, as the number of layers increases, node representations become nearly…

Machine Learning · Computer Science 2022-02-28 Pantelis Elinas , Edwin V. Bonilla

Graph Neural Networks (GNNs) have shown promising potential in graph representation learning. The majority of GNNs define a local message-passing mechanism, propagating information over the graph by stacking multiple layers. These methods,…

Machine Learning · Computer Science 2024-02-20 Ali Behrouz , Farnoosh Hashemi

Graph neural networks (GNNs), which learn the representation of a node by aggregating its neighbors, have become an effective computational tool in downstream applications. Over-smoothing is one of the key issues which limit the performance…

Machine Learning · Computer Science 2020-06-15 Kaixiong Zhou , Xiao Huang , Yuening Li , Daochen Zha , Rui Chen , Xia Hu

The effectiveness and efficiency of modeling complex spectral-spatial relations are both crucial for Hyperspectral image (HSI) classification. Most existing methods based on CNNs and transformers still suffer from heavy computational…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Jiamu Sheng , Jingyi Zhou , Jiong Wang , Peng Ye , Jiayuan Fan

Domain generalization~(DG) aims at solving distribution shift problems in various scenes. Existing approaches are based on Convolution Neural Networks (CNNs) or Vision Transformers (ViTs), which suffer from limited receptive fields or…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Shaocong Long , Qianyu Zhou , Xiangtai Li , Xuequan Lu , Chenhao Ying , Yuan Luo , Lizhuang Ma , Shuicheng Yan

The accelerated MRI reconstruction poses a challenging ill-posed inverse problem due to the significant undersampling in k-space. Deep neural networks, such as CNNs and ViTs, have shown substantial performance improvements for this task…

Image and Video Processing · Electrical Eng. & Systems 2025-04-01 Yucong Meng , Zhiwei Yang , Zhijian Song , Yonghong Shi

State Space Models (SSMs)-most notably RNNs-have historically played a central role in sequential modeling. Although attention mechanisms such as Transformers have since dominated due to their ability to model global context, their…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Hyun-kyu Ko , Youbin Kim , Jihyeon Park , Dongheok Park , Gyeongjin Kang , Wonjun Cho , Hyung Yi , Eunbyung Park

Molecular representation learning, a cornerstone for downstream tasks like molecular captioning and molecular property prediction, heavily relies on Graph Neural Networks (GNN). However, GNN suffers from the over-smoothing problem, where…

Machine Learning · Computer Science 2025-08-13 Zihang Shao , Wentao Lei , Lei Wang , Wencai Ye , Li Liu

Dynamic graphs exhibit intertwined spatio-temporal evolutionary patterns, widely existing in the real world. Nevertheless, the structure incompleteness, noise, and redundancy result in poor robustness for Dynamic Graph Neural Networks…

Machine Learning · Computer Science 2024-12-20 Haonan Yuan , Qingyun Sun , Zhaonan Wang , Xingcheng Fu , Cheng Ji , Yongjian Wang , Bo Jin , Jianxin Li

In a real-world traffic scenario, varying-scale objects are usually distributed in a cluttered background, which poses great challenges to accurate detection. Although current Mamba-based methods can efficiently model long-range…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Jun Li , Yingying Shi , Zhixuan Ruan , Nan Guo , Jianhua Xu

Topological deep learning has emerged as a powerful paradigm for modeling higher-order relational structures beyond pairwise interactions that standard graph neural networks fail to capture. While combinatorial complexes (CCs) offer a…

Machine Learning · Computer Science 2026-03-16 Jiawen Chen , Qi Shao , Mingtong Zhou , Duxin Chen , Wenwu Yu

Attention mechanisms have been widely used to capture long-range dependencies among nodes in Graph Transformers. Bottlenecked by the quadratic computational cost, attention mechanisms fail to scale in large graphs. Recent improvements in…

Machine Learning · Computer Science 2024-02-02 Chloe Wang , Oleksii Tsepa , Jun Ma , Bo Wang

Graph convolutional networks (GCNs) have been proved to be very practical to handle various graph-related tasks. It has attracted considerable research interest to study deep GCNs, due to their potential superior performance compared with…

Machine Learning · Computer Science 2023-02-13 Lei Zhang , Xiaodong Yan , Jianshan He , Ruopeng Li , Wei Chu

Graph Convolutional Networks (GCN) is a pioneering model for graph-based semi-supervised learning. However, GCN does not perform well on sparsely-labeled graphs. Its two-layer version cannot effectively propagate the label information to…

Machine Learning · Computer Science 2025-02-24 Wei Ye , Zexi Huang , Yunqi Hong , Ambuj Singh

Accurate 3D medical image segmentation demands architectures capable of reconciling global context modeling with spatial topology preservation. While State Space Models (SSMs) like Mamba show potential for sequence modeling, existing…

Image and Video Processing · Electrical Eng. & Systems 2025-06-06 Hangyu Ji

Convolutional neural networks (CNNs) and transformers are widely employed in constructing UNet architectures for medical image segmentation tasks. However, CNNs struggle to model long-range dependencies, while transformers suffer from…

Image and Video Processing · Electrical Eng. & Systems 2025-03-26 Shaolei Zhang , Jinyan Liu , Tianyi Qian , Xuesong Li

Graph Convolutional Networks (GCNs) have become pivotal in recommendation systems for learning user and item embeddings by leveraging the user-item interaction graph's node information and topology. However, these models often face the…

Information Retrieval · Computer Science 2024-04-23 Leilei Ding , Dazhong Shen , Chao Wang , Tianfu Wang , Le Zhang , Yanyong Zhang
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