T-JEPA: A Joint-Embedding Predictive Architecture for Trajectory Similarity Computation
Lihuan Li, Hao Xue, Yang Song, Flora Dilys Salim · 2024
Trajectory similarity computation is crucial for analyzing movement patterns in applications like traffic management and wildlife tracking. Recent self-supervised learning methods such as contrastive learning have made advancements in trajectory representation learning but rely on predefined data augmentation schemes, limiting generalized and robust high-level semantic understanding. We introduce T-JEPA, a self-supervised method using Joint-Embedding Predictive Architecture (JEPA) to enhance trajectory representation learning. By sampling and predicting in representation space, T-JEPA infers high-level trajectory semantics without manual intervention. Extensive experiments conducted on three urban and two Foursquare datasets verify the effectiveness of T-JEPA in trajectory similarity computation.