University of Massachusetts Amherst; University College London; University of California, Santa Barbara; Facebook AI
Wenhan Xiong, Xiang Li, Srini Iyer, Jingfei Du, Patrick Lewis, William Yang Wang, Yashar Mehdad, Scott Yih, Sebastian Riedel, Douwe Kiela, Barlas Oguz
multi-hop question answering;recursive dense retrieval;open domain complex question answering
Answering Complex Open-Domain Questions with Multi-Hop Dense Retrieval