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Graphs are ubiquitous due to their flexibility in representing social and technological systems as networks of interacting elements. Graph representation learning methods, such as node embeddings, are powerful approaches to map nodes into a…

机器学习 · 计算机科学 2023-10-03 Simone Piaggesi , Megha Khosla , André Panisson , Avishek Anand

Nodes in networks may have one or more functions that determine their role in the system. As opposed to local proximity, which captures the local context of nodes, the role identity captures the functional "role" that nodes play in a…

社会与信息网络 · 计算机科学 2021-11-18 Lili Wang , Chenghan Huang , Weicheng Ma , Ying Lu , Soroush Vosoughi

Recent works on representation learning for graph structured data predominantly focus on learning distributed representations of graph substructures such as nodes and subgraphs. However, many graph analytics tasks such as graph…

Representing the nodes of continuous-time temporal graphs in a low-dimensional latent space has wide-ranging applications, from prediction to visualization. Yet, analyzing continuous-time relational data with timestamped interactions…

机器学习 · 计算机科学 2024-05-28 Raphaël Romero , Jefrey Lijffijt , Riccardo Rastelli , Marco Corneli , Tijl De Bie

We have witnessed the discovery of many techniques for network representation learning in recent years, ranging from encoding the context in random walks to embedding the lower order connections, to finding latent space representations with…

机器学习 · 计算机科学 2017-10-10 Yanlei Yu , Zhiwu Lu , Jiajun Liu , Guoping Zhao , Ji-Rong Wen , Kai Zheng

Recently, there has been an interest in embedding networks in hyperbolic space, since hyperbolic space has been shown to work well in capturing graph/network structure as it can naturally reflect some properties of complex networks.…

社会与信息网络 · 计算机科学 2020-11-04 Lili Wang , Ying Lu , Chenghan Huang , Soroush Vosoughi

An embedding is a mapping from a set of nodes of a network into a real vector space. Embeddings can have various aims like capturing the underlying graph topology and structure, node-to-node relationship, or other relevant information about…

机器学习 · 计算机科学 2023-06-21 Ashkan Dehghan , Kinga Siuta , Agata Skorupka , Andrei Betlen , David Miller , Bogumil Kaminski , Pawel Pralat

Network representation learning (also known as information network embedding) has been the central piece of research in social and information network analysis for the last couple of years. An information network can be viewed as a linked…

社会与信息网络 · 计算机科学 2018-07-05 Sambaran Bandyopadhyay , Harsh Kara , Anirban Biswas , M N Murty

Network embedding assigns nodes in a network to low-dimensional representations and effectively preserves the network structure. Recently, a significant amount of progresses have been made toward this emerging network analysis paradigm. In…

社会与信息网络 · 计算机科学 2017-11-27 Peng Cui , Xiao Wang , Jian Pei , Wenwu Zhu

Graph node embedding aims at learning a vector representation for all nodes given a graph. It is a central problem in many machine learning tasks (e.g., node classification, recommendation, community detection). The key problem in graph…

机器学习 · 计算机科学 2019-10-01 Shupeng Gui , Xiangliang Zhang , Pan Zhong , Shuang Qiu , Mingrui Wu , Jieping Ye , Zhengdao Wang , Ji Liu

While most network embedding techniques model the relative positions of nodes in a network, recently there has been significant interest in structural embeddings that model node role equivalences, irrespective of their distances to any…

社会与信息网络 · 计算机科学 2021-03-01 Jing Zhu , Xingyu Lu , Mark Heimann , Danai Koutra

Signed network embedding is an approach to learn low-dimensional representations of nodes in signed networks with both positive and negative links, which facilitates downstream tasks such as link prediction with general data mining…

社会与信息网络 · 计算机科学 2021-04-30 Dengcheng Yan , Youwen Zhang , Wei Li , Yiwen Zhang

Prediction tasks over nodes and edges in networks require careful effort in engineering features used by learning algorithms. Recent research in the broader field of representation learning has led to significant progress in automating…

社会与信息网络 · 计算机科学 2016-07-05 Aditya Grover , Jure Leskovec

Network Embeddings (NEs) map the nodes of a given network into $d$-dimensional Euclidean space $\mathbb{R}^d$. Ideally, this mapping is such that `similar' nodes are mapped onto nearby points, such that the NE can be used for purposes such…

机器学习 · 统计学 2018-10-17 Bo Kang , Jefrey Lijffijt , Tijl De Bie

Graph Neural Networks (GNNs) rely on the graph structure to define an aggregation strategy where each node updates its representation by combining information from its neighbours. A known limitation of GNNs is that, as the number of layers…

机器学习 · 计算机科学 2022-01-19 Davide Buffelli , Fabio Vandin

We study the problem of large-scale network embedding, which aims to learn low-dimensional latent representations for network mining applications. Recent research in the field of network embedding has led to significant progress such as…

社会与信息网络 · 计算机科学 2021-12-03 Junsheng Kong , Weizhao Li , Ben Liao , Jiezhong Qiu , Chang-Yu , Hsieh , Yi Cai , Jinhui Zhu , Shengyu Zhang

Network embedding maps the nodes of a given network into a low-dimensional space such that the semantic similarities among the nodes can be effectively inferred. Most existing approaches use inner-product of node embedding to measure the…

社会与信息网络 · 计算机科学 2021-01-21 Luodi Xie , Hong Shen , Jiaxin Ren

Graph Neural Networks (GNNs) learn low dimensional representations of nodes by aggregating information from their neighborhood in graphs. However, traditional GNNs suffer from two fundamental shortcomings due to their local ($l$-hop…

机器学习 · 计算机科学 2021-04-28 Kashob Kumar Roy , Amit Roy , A K M Mahbubur Rahman , M Ashraful Amin , Amin Ahsan Ali

Recent advances in machine learning research have produced powerful neural graph embedding methods, which learn useful, low-dimensional vector representations of network data. These neural methods for graph embedding excel in graph machine…

物理与社会 · 物理学 2024-11-05 Sadamori Kojaku , Filippo Radicchi , Yong-Yeol Ahn , Santo Fortunato

Network Embedding (NE) methods, which map network nodes to low-dimensional feature vectors, have wide applications in network analysis and bioinformatics. Many existing NE methods rely only on network structure, overlooking other…

人工智能 · 计算机科学 2019-06-21 Sotiris Kotitsas , Dimitris Pappas , Ion Androutsopoulos , Ryan McDonald , Marianna Apidianaki