Multi-stage Training with Improved Negative Contrast for Neural Passage Retrieval.

Jing Lu Gustavo Hernández Ábrego Ji Ma Jianmo Ni Yinfei Yang

Published in: EMNLP (1) (2021)

Keyphrases

multistage
passage retrieval
question answering
document retrieval
lot sizing
single stage
dynamic programming
information retrieval
language model
training set
query expansion
optimal policy
information extraction
retrieval systems
ground truth
free text
knowledge base
machine learning