MTEB: Massive Text Embedding Benchmark Niklas Muennighoff author Nouamane Tazi author Loic Magne author Nils Reimers author 2023-05 text Proceedings of the 17th Conference of the European Chapter of the Association for Computational Linguistics Andreas Vlachos editor Isabelle Augenstein editor Association for Computational Linguistics Dubrovnik, Croatia conference publication muennighoff-etal-2023-mteb 10.18653/v1/2023.eacl-main.148 https://aclanthology.org/2023.eacl-main.148/ 2023-05 2014 2037