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Graph Neural Networks (GNNs) have achieved great success in processing graph data by extracting and propagating structure-aware features. Existing GNN research designs various propagation schemes to guide the aggregation of neighbor…

机器学习 · 计算机科学 2021-12-03 Jun Hu , Shengsheng Qian , Quan Fang , Changsheng Xu

Knowledge Graphs (KGs) enhance recommender systems but face challenges from inherent noise, sparsity, and Euclidean geometry's inadequacy for complex relational structures, critically impairing representation learning, especially for…

信息检索 · 计算机科学 2025-11-20 Binhao Wang , Yutian Xiao , Maolin Wang , Zhiqi Li , Tianshuo Wei , Ruocheng Guo , Xiangyu Zhao

Graph Neural Networks (GNNs) are powerful deep learning methods for Non-Euclidean data. Popular GNNs are message-passing algorithms (MPNNs) that aggregate and combine signals in a local graph neighborhood. However, shallow MPNNs tend to…

Positional encodings are a common component of neural scene reconstruction methods, and provide a way to bias the learning of neural fields towards coarser or finer representations. Current neural surface reconstruction methods use a…

计算机视觉与模式识别 · 计算机科学 2024-12-09 Thomas Walker , Octave Mariotti , Amir Vaxman , Hakan Bilen

Stack autoencoder (SAE), as a representative deep network, has unique and excellent performance in feature learning, and has received extensive attention from researchers. However, existing deep SAEs focus on original samples without…

机器学习 · 计算机科学 2022-10-28 Chuanyan Zhou , Jie Ma , Fan Li , Yongming Li , Pin Wang , Xiaoheng Zhang

Several recent works use positional encodings to extend the receptive fields of graph neural network (GNN) layers equipped with attention mechanisms. These techniques, however, extend receptive fields to the complete graph, at substantial…

机器学习 · 计算机科学 2023-12-14 Rickard Brüel-Gabrielsson , Mikhail Yurochkin , Justin Solomon

In real-world recommendation scenarios, users typically engage with platforms through multiple types of behavioral interactions. Multi-behavior recommendation algorithms aim to leverage various auxiliary user behaviors to enhance prediction…

信息检索 · 计算机科学 2025-07-22 Hengyu Zhang , Chunxu Shen , Xiangguo Sun , Jie Tan , Yanchao Tan , Yu Rong , Hong Cheng , Lingling Yi

Graph neural networks (GNNs) have been widely investigated in the field of semi-supervised graph machine learning. Most methods fail to exploit adequate graph information when labeled data is limited, leading to the problem of…

机器学习 · 计算机科学 2023-03-15 Linxuan Song , Wenxuan Tu , Sihang Zhou , Xinwang Liu , En Zhu

In recent years, Graph Neural Networks (GNNs) have been popular in the graph classification task. Currently, shallow GNNs are more common due to the well-known over-smoothing problem facing deeper GNNs. However, they are sub-optimal without…

机器学习 · 计算机科学 2023-02-20 Lanning Wei , Zhiqiang He , Huan Zhao , Quanming Yao

In this paper, we propose a novel subspace learning framework for one-class classification. The proposed framework presents the problem in the form of graph embedding. It includes the previously proposed subspace one-class techniques as its…

机器学习 · 计算机科学 2023-08-29 Fahad Sohrab , Alexandros Iosifidis , Moncef Gabbouj , Jenni Raitoharju

Subgraph GNNs enhance message-passing GNNs expressivity by representing graphs as sets of subgraphs, demonstrating impressive performance across various tasks. However, their scalability is hindered by the need to process large numbers of…

机器学习 · 计算机科学 2025-06-02 Guy Bar-Shalom , Yam Eitan , Fabrizio Frasca , Haggai Maron

Visual autoregressive models typically adhere to a raster-order ``next-token prediction" paradigm, which overlooks the spatial and temporal locality inherent in visual content. Specifically, visual tokens exhibit significantly stronger…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Yefei He , Yuanyu He , Shaoxuan He , Feng Chen , Hong Zhou , Kaipeng Zhang , Bohan Zhuang

Since its introduction, unsupervised representation learning has attracted a lot of attention from the research community, as it is demonstrated to be highly effective and easy-to-apply in tasks such as dimension reduction, clustering,…

机器学习 · 计算机科学 2018-11-07 Chin-Chia Michael Yeh , Yan Zhu , Evangelos E. Papalexakis , Abdullah Mueen , Eamonn Keogh

Self-supervised learning with masked autoencoders has recently gained popularity for its ability to produce effective image or textual representations, which can be applied to various downstream tasks without retraining. However, we observe…

机器学习 · 计算机科学 2023-08-21 Yucheng Shi , Yushun Dong , Qiaoyu Tan , Jundong Li , Ninghao Liu

Neural architecture search (NAS) has recently been addressed from various directions, including discrete, sampling-based methods and efficient differentiable approaches. While the former are notoriously expensive, the latter suffer from…

机器学习 · 计算机科学 2021-05-13 Jovita Lukasik , David Friede , Arber Zela , Frank Hutter , Margret Keuper

Deep neural networks typically learn spatially entangled representations that conflate discriminative foreground features with spurious background correlations, thereby undermining model interpretability and robustness. We propose a novel…

计算机视觉与模式识别 · 计算机科学 2025-11-13 Kaixiang Shu , Kai Meng , Junqin Luo

Graph neural networks (GNNs) face significant challenges with class imbalance, leading to biased inference results. To address this issue in heterogeneous graphs, we propose a novel framework that combines Graph Neural Network (GNN) and…

机器学习 · 计算机科学 2024-11-26 Hung-Chun Hsu , Bo-Jun Wu , Ming-Yi Hong , Che Lin , Chih-Yu Wang

Graph Neural Networks have emerged as a useful tool to learn on the data by applying additional constraints based on the graph structure. These graphs are often created with assumed intrinsic relations between the entities. In recent years,…

机器学习 · 统计学 2021-05-18 Sunil Kumar Maurya , Xin Liu , Tsuyoshi Murata

We introduce a novel masked graph autoencoder (MGAE) framework to perform effective learning on graph structure data. Taking insights from self-supervised learning, we randomly mask a large proportion of edges and try to reconstruct these…

机器学习 · 计算机科学 2022-01-10 Qiaoyu Tan , Ninghao Liu , Xiao Huang , Rui Chen , Soo-Hyun Choi , Xia Hu

Predicting the movement trajectories of multiple classes of road users in real-world scenarios is a challenging task due to the diverse trajectory patterns. While recent works of pedestrian trajectory prediction successfully modelled the…

计算机视觉与模式识别 · 计算机科学 2021-08-11 Ben A. Rainbow , Qianhui Men , Hubert P. H. Shum