ColBERTv2: Effective and Efficient Retrieval via Lightweight Late Interaction Keshav Santhanam author Omar Khattab author Jon Saad-Falcon author Christopher Potts author Matei Zaharia author 2022-07 text Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Marine Carpuat editor Marie-Catherine de Marneffe editor Ivan Vladimir Meza Ruiz editor Association for Computational Linguistics Seattle, United States conference publication santhanam-etal-2022-colbertv2 10.18653/v1/2022.naacl-main.272 https://aclanthology.org/2022.naacl-main.272/ 2022-07 3715 3734