NeuroMLR: Robust & Reliable Route Recommendation on Road Networks

Predicting the most likely route from a source location to a destination is a core functionality in mapping services. Although the problem has been studied in the literature, two key limitations remain to be addressed. First, our study reveals that a significant portion of the routes recommended by existing methods fail to reach the destination. Second, existing techniques are transductive in nature; hence, they fail to recommend routes if unseen roads are encountered at inference time. In this paper, we address these limitations through an inductive algorithm called NEUROMLR. NEUROMLR learns a generative model from historical trajectories by conditioning on three explanatory factors: the current location, the destination, and real-time traffic conditions. The conditional distributions are learned through a novel combination of Lipschitz embeddings with Graph Convolutional Networks (GCN) using historical trajectory data. Through in-depth experiments on realworld datasets, we establish that NEUROMLR imparts significant improvement in accuracy over the state of the art. More importantly, NEUROMLR generalizes dramatically better to unseen data and the recommended routes reach the destination with much higher likelihood than existing techniques.