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Dense Hierarchical Retrieval for Open-domain Question Answering.
Ye Liu
Kazuma Hashimoto
Yingbo Zhou
Semih Yavuz
Caiming Xiong
Philip S. Yu
Published in:
EMNLP (Findings) (2021)
Keyphrases
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open domain question answering
question answering
information retrieval
test collection
information retrieval systems
answer extraction
image retrieval
document retrieval
text retrieval
passage retrieval
information extraction
retrieval model