With the growing use of multiple social platforms, aligning user identities across networks, known as Social Network Alignment (SNA), has become crucial for personalized services, fraud detection, and online safety. However, existing SNA methods face significant challenges when dealing with sparse connections, heterogeneous structures, and dynamic changes in real-world social networks.

To address these problems, a research team led by Professor Dan Feng from Huazhong University of Science and Technology published a new study on 15 June 2026 in Frontiers of Computer Science, co-published by Higher Education Press and Springer Nature.

The team conducted a systematic review of SNA methods based on Graph Representation Learning (GRL), with a special focus on emerging approaches that integrate Large Language Models (LLMs) to enhance semantic reasoning and alignment accuracy.

In the research, they present a unified perspective on SNA methods, covering both static and dynamic networks as well as homogeneous and heterogeneous structures. They propose a comprehensive taxonomy of existing approaches, ranging from early matrix factorization techniques and shallow random-walk-based models to state-of-the-art deep graph neural networks. Uniquely, they emphasize the emerging role of LLMs, such as Qwen, Llama2 and ERNIE, in enhancing alignment precision through semantic reasoning, which is an aspect largely overlooked in prior research. Additionally, they provide a benchmarking analysis across more than ten real-world datasets, offering a thorough comparison of the effectiveness of various SNA methods under diverse conditions.

Future work can focus on developing more interpretable, scalable, and privacy-preserving SNA methods. In particular, there is strong potential in combining GRL with lightweight or distilled LLMs to reduce computational costs while maintaining high alignment accuracy.
DOI:10.1007/s11704-025-40985-2