# AI-Empowered Trajectory Anomaly Detection for Intelligent Transportation Systems: A Hierarchical Federated Learning Approach

> Research article (IEEE Transactions on Intelligent Transportation Systems, 2022) · cited 56× · AI/ML

**Wikidata**: [openalex:W4312660387](https://www.wikidata.org/wiki/openalex:W4312660387)  
**Source**: https://4ort.xyz/entity/ai-empowered-trajectory-anomaly-detection-for-intelligent-transportation-systems-a-hierarchical-federated-learning-appro