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Recent work on Graph Neural Networks has demonstrated that self-supervised pretraining can further enhance performance on downstream graph, link, and node classification tasks. However, the efficacy of pretraining tasks has not been fully…

Machine Learning · Computer Science 2023-03-28 Jonathan Pilault , Michael Galkin , Bahare Fatemi , Perouz Taslakian , David Vasquez , Christopher Pal

Recently, graph neural networks (GNNs) have proved to be suitable in tasks on unstructured data. Particularly in tasks as community detection, node classification, and link prediction. However, most GNN models still operate with static…

Machine Learning · Computer Science 2019-06-07 Darwin Saire Pilco , Adín Ramírez Rivera

Knowledge Graphs (KGs) are foundational to applications such as search, question answering, and recommendation. Conventional knowledge graph construction methods are predominantly static, rely ing on a single-step construction from a fixed…

Artificial Intelligence · Computer Science 2026-03-23 Weidong Bao , Yilin Wang , Ruyu Gao , Fangling Leng , Yubin Bao , Ge Yu

Graph Convolution Networks (GCNs) have significantly succeeded in learning user and item representations for recommendation systems. The core of their efficacy is the ability to explicitly exploit the collaborative signals from both the…

Information Retrieval · Computer Science 2024-11-11 Fan Liu , Shuai Zhao , Zhiyong Cheng , Liqiang Nie , Mohan Kankanhalli

A Knowledge Graph (KG) is the directed graphical representation of entities and relations in the real world. KG can be applied in diverse Natural Language Processing (NLP) tasks where knowledge is required. The need to scale up and complete…

Computation and Language · Computer Science 2024-04-19 Xincan Feng , Zhi Qu , Yuchang Cheng , Taro Watanabe , Nobuhiro Yugami

Continual learning on graphs tackles the problem of training a graph neural network (GNN) where graph data arrive in a streaming fashion and the model tends to forget knowledge from previous tasks when updating with new data. Traditional…

Machine Learning · Computer Science 2024-01-09 Xiaoxue Han , Zhuo Feng , Yue Ning

The sequential recommendation systems capture users' dynamic behavior patterns to predict their next interaction behaviors. Most existing sequential recommendation methods only exploit the local context information of an individual…

Information Retrieval · Computer Science 2022-06-08 Yixin Zhang , Yong Liu , Yonghui Xu , Hao Xiong , Chenyi Lei , Wei He , Lizhen Cui , Chunyan Miao

Graph-based recommendation systems use higher-order user and item embeddings for next-item predictions. Dynamically adding collaborative signals from neighbors helps to use similar users' preferences during learning. While item-item…

Information Retrieval · Computer Science 2025-06-09 Anushka Tiwari , Haimonti Dutta , Shahrzad Khanizadeh

Graph representation learning has attracted much attention in supporting high quality candidate search at scale. Despite its effectiveness in learning embedding vectors for objects in the user-item interaction network, the computational…

Information Retrieval · Computer Science 2020-03-05 Qiaoyu Tan , Ninghao Liu , Xing Zhao , Hongxia Yang , Jingren Zhou , Xia Hu

Graph structure learning (GSL), which aims to learn the adjacency matrix for graph neural networks (GNNs), has shown great potential in boosting the performance of GNNs. Most existing GSL works apply a joint learning framework where the…

Machine Learning · Computer Science 2023-03-02 Jianan Zhao , Qianlong Wen , Mingxuan Ju , Chuxu Zhang , Yanfang Ye

Knowledge Graph (KG) alignment is to discover the mappings (i.e., equivalent entities, relations, and others) between two KGs. The existing methods can be divided into the embedding-based models, and the conventional reasoning and lexical…

Computation and Language · Computer Science 2021-06-14 Zhiyuan Qi , Ziheng Zhang , Jiaoyan Chen , Xi Chen , Yuejia Xiang , Ningyu Zhang , Yefeng Zheng

Graph signal processing (GSP) is a key tool for satisfying the growing demand for information processing over networks. However, the success of GSP in downstream learning and inference tasks is heavily dependent on the prior identification…

Signal Processing · Electrical Eng. & Systems 2021-03-29 Seyed Saman Saboksayr , Gonzalo Mateos , Mujdat Cetin

In recent years, graph neural networks (GNNs) have been widely applied in tackling combinatorial optimization problems. However, existing methods still suffer from limited accuracy when addressing that on complex graphs and exhibit poor…

Machine Learning · Computer Science 2025-11-13 Yuyao Long

Graph Neural Networks (GNNs) have led to state-of-the-art performance on a variety of machine learning tasks such as recommendation, node classification and link prediction. Graph neural network models generate node embeddings by merging…

Machine Learning · Computer Science 2020-11-04 Yunpeng Weng , Xu Chen , Liang Chen , Wei Liu

Recently, Graph Neural Networks (GNNs) have proven their effectiveness for recommender systems. Existing studies have applied GNNs to capture collaborative relations in the data. However, in real-world scenarios, the relations in a…

Information Retrieval · Computer Science 2021-11-30 Xiaohan Li , Zhiwei Liu , Stephen Guo , Zheng Liu , Hao Peng , Philip S. Yu , Kannan Achan

Graph data are pervasive in many real-world applications. Recently, increasing attention has been paid on graph neural networks (GNNs), which aim to model the local graph structures and capture the hierarchical patterns by aggregating the…

Machine Learning · Computer Science 2020-06-29 Kwei-Herng Lai , Daochen Zha , Kaixiong Zhou , Xia Hu

Graph Neural Networks (GNN) have demonstrated state-of-the-art performance in numerous scientific and high-performance computing (HPC) applications. Recent work suggests that "souping" (combining) individually trained GNNs into a single…

Machine Learning · Computer Science 2025-03-17 Joseph Zuber , Aishwarya Sarkar , Joseph Jennings , Ali Jannesari

Collaborative filtering often suffers from sparsity and cold start problems in real recommendation scenarios, therefore, researchers and engineers usually use side information to address the issues and improve the performance of recommender…

Information Retrieval · Computer Science 2019-01-28 Hongwei Wang , Fuzheng Zhang , Miao Zhao , Wenjie Li , Xing Xie , Minyi Guo

Graph Convolutional Network (GCN) has achieved great success and has been applied in various fields including recommender systems. However, GCN still suffers from many issues such as training difficulties, over-smoothing, vulnerable to…

Information Retrieval · Computer Science 2020-05-01 Shaowen Peng , Tsunenori Mine

Recently, cross-spectral image patch matching based on feature relation learning has attracted extensive attention. However, performance bottleneck problems have gradually emerged in existing methods. To address this challenge, we make the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Chuang Yu , Yunpeng Liu , Jinmiao Zhao , Xiangyu Yue