UniK-QA: Unified Representations of Structured and Unstructured Knowledge for Open-Domain Question Answering Barlas Oguz author Xilun Chen author Vladimir Karpukhin author Stan Peshterliev author Dmytro Okhonko author Michael Schlichtkrull author Sonal Gupta author Yashar Mehdad author Scott Yih 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 oguz-etal-2022-unik 10.18653/v1/2022.findings-naacl.115 https://aclanthology.org/2022.findings-naacl.115/ 2022-07 1535 1546