Relevance-guided Supervision for OpenQA with ColBERT

AbstractSystems for Open-Domain Question Answering (OpenQA) generally depend on a retriever for finding candidate passages in a large corpus and a reader for extracting answers from those passages. In much recent work, the retriever is a learned component that uses coarse-grained vec...

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Bibliographic Details
Main Authors: Omar Khattab, Christopher Potts, Matei Zaharia
Format: Article
Language:English
Published: The MIT Press 2021-01-01
Series:Transactions of the Association for Computational Linguistics
Online Access:https://direct.mit.edu/tacl/article/doi/10.1162/tacl_a_00405/107205/Relevance-guided-Supervision-for-OpenQA-with