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Computer Science > Information Retrieval

arXiv:2308.10191 (cs)
[Submitted on 20 Aug 2023]

Title:Offline Pseudo Relevance Feedback for Efficient and Effective Single-pass Dense Retrieval

Authors:Xueru Wen, Xiaoyang Chen, Xuanang Chen, Ben He, Le Sun
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Abstract:Dense retrieval has made significant advancements in information retrieval (IR) by achieving high levels of effectiveness while maintaining online efficiency during a single-pass retrieval process. However, the application of pseudo relevance feedback (PRF) to further enhance retrieval effectiveness results in a doubling of online latency. To address this challenge, this paper presents a single-pass dense retrieval framework that shifts the PRF process offline through the utilization of pre-generated pseudo-queries. As a result, online retrieval is reduced to a single matching with the pseudo-queries, hence providing faster online retrieval. The effectiveness of the proposed approach is evaluated on the standard TREC DL and HARD datasets, and the results demonstrate its promise. Our code is openly available at this https URL.
Comments: Accepted at SIGIR2023
Subjects: Information Retrieval (cs.IR)
ACM classes: H.3.3
Cite as: arXiv:2308.10191 [cs.IR]
  (or arXiv:2308.10191v1 [cs.IR] for this version)
  https://doi.org/10.48550/arXiv.2308.10191
Related DOI: https://doi.org/10.1145/3539618.3592028

Submission history

From: Xueru Wen [view email]
[v1] Sun, 20 Aug 2023 07:42:09 UTC (83 KB)
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