New paper on context-aware knowledge graph framework for traffic forecasting

Our new paper, titled “Context-Aware Knowledge Graph Framework for Traffic Speed Forecasting Using Graph Neural Networks,” has been accepted for publication in IEEE Transactions on Intelligent Transportation Systems.

This paper introduces a novel context-aware knowledge graph (CKG) framework to enhance traffic speed forecasting by effectively modeling spatial and temporal contexts. Using a relation-dependent integration strategy, the framework generates context-aware representations that capture the intricate spatio-temporal dependencies of urban environments.

Building on this foundation, a CKG-GNN model is developed, integrating the CKG, dual-view multi-head self-attention mechanisms, and graph neural networks (GNNs). This integration not only significantly improves predictive accuracy but also underscores the importance of contextual information in forecasting traffic dynamics.

By bridging domain knowledge with graph neural architectures, the proposed approach demonstrates its potential for advancing intelligent transportation systems.

Please check our paper and codes.

New paper in Sustainable Cities and Society: socioeconomic explanations of global urban resilience

Urban resilience refers to the ability of urban systems to adapt and recover from external shocks, such as the recent global pandemic. Our new paper, titled “Leveraging Context-Adjusted Nighttime Light Data for Socioeconomic Explanations of Global Urban Resilience,” provides a comprehensive analysis of urban responses to COVID-19.

Using context-adjusted nighttime light data, our study models urban resilience during the pandemic, identifying five diverse patterns characterized by phases of downturn, minimum impact, and recovery. We also uncover significant correlations between socioeconomic factors and urban resilience, revealing that stringent measures may reduce resilience, while proactive health and containment strategies can enhance it. Furthermore, we delve into strategic socioeconomic interventions to enhance urban resilience using counterfactual explanations.

For more details, check out our paper!