ColBERT: Efficient and Effective Passage Search via Contextualized Late Interaction over BERT

今天分享的是 2020 SIGIR 会议论文：ColBERT: Efficient and Effective Passage Search via Contextualized Late Interaction over BERT，论文地址：https://arxiv.org/pdf/2004.12832.pdf

 

在召回模块常用到的模型结构为双塔模型，即DSSM模型，该模型对query和condidate分别建模，可以在离线阶段很方便的获取query和condidate的Embedding表征。结构为