Zhang, X., Xu, Y., Li, J., Liu, R., & Hu, Z. (2026). Agent Journey Beyond RGB: Hierarchical Semantic-Spatial Representation Enrichment for Vision-and-Language Navigation. Proceedings of the AAAI Conference on Artificial Intelligence, 40(22), 18791–18799. https://doi.org/10.1609/aaai.v40i22.38948