Dense Hierarchical Retrieval for Open-Domain Question Answering.

Ye Liu Kazuma Hashimoto Yingbo Zhou Semih Yavuz Caiming Xiong Philip S. Yu

Published in: CoRR (2021)

Keyphrases

open domain question answering
question answering
information retrieval
retrieval systems
answer extraction
relevance feedback
retrieval model
test collection
text retrieval
multimedia
image retrieval
probabilistic model
co occurrence
information retrieval systems