关键词: 图生成;动态图;生成对抗网络, 图自注意力机制

Abstract: In recent years, the problem of graph generation has received widespread attention. By learning the distribution of real graphs, graph generation techniques can generate synthetic graphs with similar characteristics, which are widely used in various fields such as e-commerce and power networks. In practical applications, most graphs are dynamic, with their topological structures changing over time. However, existing graph generators are primarily designed for static graphs, neglecting the temporal characteristics of graphs. Additionally, current dynamic graph generation models generally suffer from long training times, making it difficult to handle large-scale dynamic graphs.  To address these issues, a novel GAN-based model, called dynamic graph generative adversarial network (DGGAN), is proposed. The models encoder employs a graph self-attention mechanism for parallel computation, thereby enhancing model training efficiency. A gating mechanism is used to control information flow, helping the model learn and memorize key information more effectively. Comprehensive experimental evaluations of DGGAN and representative graph generation methods were conducted on six dynamic graph datasets. The experimental results demonstrate that DGGAN outperforms existing models in terms of generated graphs quality and efficiency.

Key words: graph generation, dynamic graph, generative adversarial network, graph self-attention machanism