Title: Bi-phase LSTM: a LSTM-based autoencoder architecture for dynamic social network prediction

Authors: Lin Hui; Yi-Cheng Chen

Addresses: Department of Computer Science and Information Engineering, Tamkang University, No. 151, Yingzhuan Rd., Tamsui Dist., New Taipei City 251301, Taiwan ' Department of Information Management, National Central University, No. 300, Zhongda Rd., Zhongli District, Taoyuan City 320317, Taiwan

Abstract: In recent years, social networks have grown in popularity, with most people actively engaging on these platforms. These networks hold valuable insights into users' values and interests, allowing us to analyse relationships between connected individuals and even predict potential friendships. However, social networks are dynamic, and their structure evolves over time. To account for this, we employed a dual approach using a bi-phase LSTM autoencoder and a bi-phase LSTM predictor. These tools capture the changing characteristics of social networks and predict future graph structures. We rigorously tested our model on three datasets and compared its performance with other models. The bi-phase LSTM consistently delivered strong results across all datasets. Additionally, the model's hyperparameters were fine-tuned to improve predictive accuracy, demonstrating its reliability in forecasting the evolution of social network structures.

Keywords: feature extraction; autoencoder; decoder; long short-term memory; dynamic social network.

DOI: 10.1504/IJWGS.2025.150155

International Journal of Web and Grid Services, 2025 Vol.21 No.3/4, pp.290 - 307

Received: 19 Jul 2024
Accepted: 21 Nov 2024
Published online: 02 Dec 2025 *

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