2602003133
  • Open Access
  • Review

Graph Representation Learning in Complex Networks: Recent Advances and Open Challenges

  • Yue Yang 1,2,3,   
  • Dongxu Li 1,2,3,   
  • Ziwen Cui 1,2,3,   
  • Hengchuang Yin 1,2,3,   
  • Qinglong Sun 4,   
  • Mingjian Zhang 1,2,3,   
  • Ying Chang 1,2,3,   
  • Lun Hu 1,2,3,*

Received: 13 Jan 2026 | Revised: 15 Feb 2026 | Accepted: 26 Feb 2026 | Published: 28 Feb 2026

Abstract

Complex networks have been widely adopted to model diverse real-world systems. However, the increasing complexity of such networks, characterized by heterogeneity, higher-order interactions, and temporal and dynamic learning settings, poses critical challenges to traditional machine learning methods. To address these challenges, graph representation learning (GRL) has emerged as a fundamental paradigm for analyzing complex networks by learning low-dimensional representations that preserve structural and semantic information in non-Euclidean spaces. With the rapid development of deep learning, graph neural networks (GNNs) have become central to GRL, enabling end-to-end learning on graph-structured data. In this survey, we provide a systematic and comprehensive overview of graph representation learning in complex networks. We review representation learning techniques at multiple granularities, including node-level, edge-level, and graph-level embeddings. In addition, we summarize key aspects of advanced GRL research, encompassing GNN architectural design, structural complexity modeling, learning and optimization strategies, as well as representative real-world applications. Finally, we highlight emerging topics and open challenges to outline promising directions for future research.

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Yang, Y.; Li, D.; Cui, Z.; Yin, H.; Sun, Q.; Zhang, M.; Chang, Y.; Hu, L. Graph Representation Learning in Complex Networks: Recent Advances and Open Challenges. Journal of Artificial Intelligence for Automation 2026, 1 (1), 4.
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