Challenges in Generalization in Open Domain Question Answering Linqing Liu author Patrick Lewis author Sebastian Riedel author Pontus Stenetorp author 2022-07 text Findings of the Association for Computational Linguistics: NAACL 2022 Marine Carpuat editor Marie-Catherine de Marneffe editor Ivan Vladimir Meza Ruiz editor Association for Computational Linguistics Seattle, United States conference publication liu-etal-2022-challenges 10.18653/v1/2022.findings-naacl.155 https://aclanthology.org/2022.findings-naacl.155/ 2022-07 2014 2029