Generating Synthetic Mobility Networks with Generative Adversarial Networks
This work addresses the need for realistic mobility data to study societal phenomena like traffic and epidemics, but it is incremental as it applies an existing GAN method to a new domain.
The authors tackled the problem of generating realistic synthetic mobility networks for cities, using a GAN-based model called MoGAN, which outperformed classical Gravity and Radiation models in realism on bike and taxi ride datasets.
The increasingly crucial role of human displacements in complex societal phenomena, such as traffic congestion, segregation, and the diffusion of epidemics, is attracting the interest of scientists from several disciplines. In this article, we address mobility network generation, i.e., generating a city's entire mobility network, a weighted directed graph in which nodes are geographic locations and weighted edges represent people's movements between those locations, thus describing the entire mobility set flows within a city. Our solution is MoGAN, a model based on Generative Adversarial Networks (GANs) to generate realistic mobility networks. We conduct extensive experiments on public datasets of bike and taxi rides to show that MoGAN outperforms the classical Gravity and Radiation models regarding the realism of the generated networks. Our model can be used for data augmentation and performing simulations and what-if analysis.