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Dense Text Retrieval Based on Pretrained Language Models: A Survey
Open accessAbstract
Text retrieval is a long-standing research topic on information seeking, where a system is required to return relevant information resources to user’s queries in natural language. From heuristic-based retrieval methods to learning-based ranking functions, the underlying retrieval models have been continually evolved with the ever-lasting technical innovation. To design effective retrieval models, a key point lies in how to learn text representations and model the relevance matching. The recent success of pretrained language models (PLM) sheds light on developing more capable text-retrieval approaches by leveraging the excellent modeling capacity of PLMs. With powerful PLMs, we can effectively learn the semantic representations of queries and texts in the latent representation space, and further construct the semantic matching function between the dense vectors for relevance modeling. Such a retrieval approach is called dense retrieval , since it employs dense vectors to represent the texts. Considering the rapid progress on dense retrieval, this survey systematically reviews the recent progress on PLM-based dense retrieval. Different from previous surveys on dense retrieval, we take a new perspective to organize the related studies by four major aspects, including architecture, training, indexing and integration, and thoroughly summarize the mainstream techniques for each aspect. We extensively collect the recent advances on this topic, and include 300+ reference papers. To support our survey, we create a website for providing useful resources, and release a code repository for dense retrieval. This survey aims to provide a comprehensive, practical reference focused on the major progress for dense text retrieval.
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“Prior research has effectively leveraged context compression techniques such as retrieval and truncation to address long text tasks with pretrained language models (Gong et al., 2020; Zhang et al., 2022; Zhao et al., 2022).”
From BAMBOO: A Comprehensive Benchmark for Evaluating Long Text Modeling Capacities of Large Language Models (2023) · cites this paper as Zhao et al., 2022
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PAQ: 65 Million Probably-Asked Questions and What You Can Do With Them
Lewis, P., Wu, Y., Liu, L., Minervini, P., Küttler, H., Piktus, A., Stenetorp, P., & Riedel, S. (2021) · Transactions of the Association for Computational Linguistics · doi:10.1162/tacl_a_00415 · Cited by 171 · cited 2×
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“Another possible approach to understanding the behavior of dense retrievers is axiomatic analysis from classic IR literature [196]–[198].”
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“Information retrieval Web MS MARCO [32] 502,939 532,761 6,980 6,837 8,841,823 Web mMARCO [44] 808,731 – 101,093 – 8,841,823 News TREC-NEWS [43] – – – 57 594,977 Biomedical TREC-COVID [45] – – – 50 171,332 Biomedical NFCorpus [46] 5,922 110,575 324 323 3,633 Twitter Signal-1M [47] – – – 97 2,866,316 Argument Touché-202…”
BackgroundRethinking search: making domain experts out of dilettantes
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InPars: Unsupervised Dataset Generation for Information Retrieval
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Information Retrieval Evaluation
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Pretrained Transformers for Text Ranking: BERT and BeyondPreprint
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“[25] present a review of text ranking methods mainly based on pretrained Transformers, Fan et al.”
BackgroundMethodInfluentialMr. TyDi: A Multi-lingual Benchmark for Dense Retrieval
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Information Retrieval Evaluation
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Learning to Rank for Information Retrieval and Natural Language Processing
Li, H. (2011) · Synthesis lectures on human language technologies · doi:10.1007/978-3-031-02141-1 · Cited by 91 · cited 1×
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BackgroundGPL: Generative Pseudo Labeling for Unsupervised Domain Adaptation of Dense Retrieval
Wang, K., Thakur, N., Reimers, N., & Gurevych, I. (2022) · Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL-HLT) · doi:10.18653/v1/2022.naacl-main.168 · Cited by 83
Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval
Wang, X., Macdonald, C., Tonellotto, N., & Ounis, I. (2021) · ACM SIGIR International Conference on Theory of Information Retrieval (ICTIR) · doi:10.1145/3471158.3472250 · Cited by 82 · cited 1×
“[190] employ relevance feedback to enhance the multi-representation dense retrieval models, showing a large performance improvement over the base model ColBERT.”
MethodAutoregressive Search Engines: Generating Substrings as Document Identifiers
Bevilacqua, M., Ottaviano, G., Lewis, P., Yih, S., Riedel, S., & Petroni, F. (2022) · neural information processing systems · doi:10.52202/068431-2296 · Cited by 80
Adaptive Semiparametric Language Models
Yogatama, D., d’Autume, C. D. M., & Kong, L. (2021) · Transactions of the Association for Computational Linguistics · doi:10.1162/tacl_a_00371 · Cited by 72 · cited 1×
“[315] incorporate a gating mechanism to replace the fixed interpolation parameter in kNN-LM, which adaptively combines short-term memory with long-term memory (i.”
BackgroundQuery-driven iterated neighborhood graph search for large scale indexing
Wang, J., & Li, S. (2012) · ACM International Conference on Multimedia (ACM MM) · doi:10.1145/2393347.2393378 · Cited by 71
Pre-trained Language Model for Web-scale Retrieval in Baidu Search
Liu, Y., Lu, W., Cheng, S., Shi, D., Wang, S., Cheng, Z., & Yin, D. (2021) · ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) · doi:10.1145/3447548.3467149 · Cited by 68 · cited 3×
“3), an integration of dense retrieval and sparse retrieval techniques has been employed in Baidu search [345] and Spotify search27.”
MethodMulti-Task Retrieval for Knowledge-Intensive Tasks
Maillard, J., Karpukhin, V., Petroni, F., Yih, W.-T., Oğuz, B., Stoyanov, V., & Ghosh, G. (2021) · Annual Meeting of the Association for Computational Linguistics · doi:10.18653/v1/2021.acl-long.89 · Cited by 67
MS MARCO: Benchmarking Ranking Models in the Large-Data Regime
Craswell, N., Mitra, B., Yılmaz, E., Campos, D., & Lin, J. (2021) · International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · doi:10.1145/3404835.3462804 · Cited by 66 · cited 1×
“A recent study [70] has summarized the promotion effect of MS MARCO on the progress of dense retrieval: “the MS MARCO datasets have enabled large-data exploration of neural models”.”
BackgroundShallow pooling for sparse labels
Arabzadeh, N., Vtyurina, A., Yan, X., & Clarke, C. L. A. (2022) · Information Retrieval · doi:10.1007/s10791-022-09411-0 · Cited by 61 · cited 2×
“This issue becomes more severe for hard negatives, which are more likely to be false negatives [74], [214], [215] (i.”
BackgroundA Length-Extrapolatable Transformer
Sun, Y., Dong, L., Patra, B., Ma, S., Huang, S., Benhaim, A., Chaudhary, V., Song, X., & Wei, F. (2023) · Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) · doi:10.18653/v1/2023.acl-long.816 · Cited by 59
Evaluating the Robustness of Retrieval Pipelines with Query Variation Generators
Penha, G., Câmara, A., & Hauff, C. (2022) · Lecture notes in computer science · doi:10.1007/978-3-030-99736-6_27 · Cited by 58
CorpusBrain: Pre-train a Generative Retrieval Model for Knowledge-Intensive Language Tasks
Chen, J., Zhang, R., Guo, J., Liu, Y., Fan, Y., & Cheng, X. (2022) · Proceedings of the 31st ACM International Conference on Information & Knowledge Management · doi:10.1145/3511808.3557271 · Cited by 57
The thesaurus approach to information retrieval
Joyce, T., & Needham, R. M. (1958) · American Documentation · doi:10.1002/asi.5090090305 · Cited by 55
Domain-matched Pre-training Tasks for Dense Retrieval
Oğuz, B., Lakhotia, K., Gupta, A., Lewis, P., Karpukhin, V., Piktus, A., Chen, X., Riedel, S., Yih, S., Gupta, S., et al. (2022) · Findings of the Association for Computational Linguistics: NAACL · doi:10.18653/v1/2022.findings-naacl.114 · Cited by 50
Dealing with Typos for BERT-based Passage Retrieval and Ranking
Zhuang, S., & Zuccon, G. (2021) · Conference on Empirical Methods in Natural Language Processing (EMNLP) · doi:10.18653/v1/2021.emnlp-main.225 · Cited by 49 · cited 4×
“[291] propose a typos-aware training approach, which changes the queries”
BackgroundMethodInfluentialJoint Learning of Deep Retrieval Model and Product Quantization based Embedding Index
Zhang, H., Shen, H., Qiu, Y., Jiang, Y., Wang, S., Xu, S., Xiao, Y., Long, B., & Yang, W.-Y. (2021) · International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · doi:10.1145/3404835.3462988 · Cited by 47 · cited 2×
“[263] also propose several improved optimization strategies (including gradient straight-through estimators, warm start centroids and Givens rotation) to jointly train deep retrieval models with quantization based embedding index.”
BackgroundMagnani, A., Liu, F., Chaidaroon, S., Yadav, S., Suram, P. R., Puthenputhussery, A., Chen, S., Xie, M., Kashi, A., Lee, T., et al. (2022) · ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) · doi:10.1145/3534678.3539164 · Cited by 47 · cited 3×
“[282] design a dense-sparse hybrid system for e-commerce search deployed at Walmart, and they select negatives based on three strategies including product type matching, query”
BackgroundMethodProceedings of the 20th Australasian Document Computing Symposium
(2015) · doi:10.1145/2838931 · Cited by 45
Promptagator: Few-shot Dense Retrieval From 8 Examples
Dai, Z., Zhao, V. Y., Ma, J., Luan, Y., Ni, J., Lu, J., Bakalov, A., Guu, K., Hall, K. B., & Chang, M.-W. (2022) · arXiv · doi:10.48550/arxiv.2209.11755 · Cited by 43 · cited 3×
“Recently, Promptagator [153] leverages a large language model consisting of 137 billion parameters, i.”
BackgroundMethodQue2Search: Fast and Accurate Query and Document Understanding for Search at Facebook
Liu, Y., Rangadurai, K., He, Y., Malreddy, S., Gui, X., Liu, X., & Borisyuk, F. (2021) · ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) · doi:10.1145/3447548.3467127 · Cited by 41 · cited 2×
“[348] incorporate the embeddings of product images as the input of dense retriever.”
MethodPredicting Efficiency/Effectiveness Trade-offs for Dense vs. Sparse Retrieval Strategy Selection
Arabzadeh, N., Yan, X., & Clarke, C. L. A. (2021) · Proceedings of the 30th ACM International Conference on Information & Knowledge Management · doi:10.1145/3459637.3482159 · Cited by 41
Salient Phrase Aware Dense Retrieval: Can a Dense Retriever Imitate a Sparse One?
Chen, X., Lakhotia, K., Oğuz, B., Gupta, A., Lewis, P., Peshterliev, S., Mehdad, Y., Gupta, S., & Yih, W.-T. (2022) · Findings of the Association for Computational Linguistics: EMNLP (Findings of EMNLP) · doi:10.18653/v1/2022.findings-emnlp.19 · Cited by 40
One Question Answering Model for Many Languages with Cross-lingual Dense Passage RetrievalPreprint
Asai, A., Yu, X., Kasai, J., & Hajishirzi, H. (2021) · arXiv (Cornell University) · doi:10.48550/arxiv.2107.11976 · Cited by 37 · cited 1×
“[322] further propose a multilingual dense passage retriever that extends DPR to retrieve candidate passages from multilingual document collections in a cross-lingual way.”
BackgroundUni-Retriever: Towards Learning the Unified Embedding Based Retriever in Bing Sponsored Search
Zhang, J., Liu, Z., Han, W., Xiao, S., Zheng, R., Shao, Y., Sun, H., Zhu, H., Srinivasan, P., Deng, W., et al. (2022) · ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) · doi:10.1145/3534678.3539212 · Cited by 36
Diagnosing BERT with Retrieval Heuristics
Câmara, A., & Hauff, C. (2020) · Lecture notes in computer science · doi:10.1007/978-3-030-45439-5_40 · Cited by 35 · cited 1×
“However, it has been found that existing IR axioms may only partially explain [200] or even not be suitable to analyze [201] the behavior of PLM-based IR models.”
BackgroundLearning to retrieve passages without supervision
Ram, O., Shachaf, G., Levy, O., Berant, J., & Globerson, A. (2022) · Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies · doi:10.18653/v1/2022.naacl-main.193 · Cited by 35
Challenges in Generalization in Open Domain Question Answering
Liu, L., Lewis, P., Riedel, S., & Stenetorp, P. (2022) · Findings of the Association for Computational Linguistics: NAACL · doi:10.18653/v1/2022.findings-naacl.155 · Cited by 34
Parameter-Efficient Prompt Tuning Makes Generalized and Calibrated Neural Text Retrievers
Tam, W., Liu, X., Ji, K., Xue, L., Liu, J., Li, T., Dong, Y., & Tang, J. (2023) · Findings of the Association for Computational Linguistics: EMNLP (Findings of EMNLP) · doi:10.18653/v1/2023.findings-emnlp.874 · Cited by 33
Self-citationResults of the NeurIPS'21 Challenge on Billion-Scale Approximate Nearest Neighbor SearchPreprint
Simhadri, H. V., Williams, G., Aumüller, M., Douze, M., Babenko, A., Baranchuk, D., Chen, Q., Hosseini, L., Krishnaswamy, R., Srinivasa, G., et al. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2205.03763 · Cited by 31 · cited 1×
“In order to evaluate different ANNS aglorithms, ANN-Benchmarks [252]18 has been released with a millionscale benchmark, and an enlarged version called Big-ANNBenchmarks [253]19 further extends the data size to a billion scale.”
MethodPROD: Progressive Distillation for Dense Retrieval
Lin, Z., Gong, Y., Liu, X., Zhang, H., Lin, C., Dong, A., Jiao, J., Lu, J., Jiang, D., Majumder, R., et al. (2023) · International World Wide Web Conference (WWW) · doi:10.1145/3543507.3583421 · Cited by 29 · cited 4×
“PROD [154] proposes to use a progressive chain of the teacher model with improved model architectures and increased network layers: 12-layer bi-encoder → 12layer cross-encoder → 24-layer cross-encoder (given the 6layer bi-encoder as the student model).”
MethodInfluentialWang, J., Jatowt, A., & Yoshikawa, M. (2022) · International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · doi:10.1145/3477495.3531734 · Cited by 28
Tevatron: An Efficient and Flexible Toolkit for Dense RetrievalPreprint
Gao, L., Ma, X., Lin, J., & Callan, J. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2203.05765 · Cited by 27 · cited 2×
“It can be accessed at the link: https://github.com/TextTron/Tevatron.”
MethodProceedings of the 2021 ACM SIGIR International Conference on Theory of Information Retrieval
Hasibi, F., Fang, Y., & Aizawa, A. (2021) · doi:10.1145/3471158 · Cited by 27
xMoCo: Cross Momentum Contrastive Learning for Open-Domain Question Answering
Yang, N., Wei, F., Jiao, B., Jiang, D., & Yang, L. (2021) · doi:10.18653/v1/2021.acl-long.477 · Cited by 26 · cited 1×
“Similar symmetric optimization tricks have been used in a number of follow-up studies [115], [132], [209], [210], showing an improved retrieval performance.”
BackgroundLearning Robust Dense Retrieval Models from Incomplete Relevance Labels
Prakash, P., Killingback, J., & Zamani, H. (2021) · International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · doi:10.1145/3404835.3463106 · Cited by 25 · cited 2×
“index 2021 Condenser [112] Condenser SR CE IB REP 2021 DRPQ [113] BERTbase MR NLL IB+DyHN Multiple pseudo query embeddings 2021 RANCE [114] RoBERTabase SR NLL DeHN 2021 DANCE [115] RoBERTabase SR IOC SHN Contrastive dual learning 2021 DPR-PAQ [116] RoBERTalarge SR NLL IB+SHN ALD GAP 2021 JPQ [117] BERTbase SR IOC DyHN…”
BackgroundMethodLED: Lexicon-Enlightened Dense Retriever for Large-Scale Retrieval
Zhang, K., Tao, C., Shen, T., Xu, C., Geng, X., Jiao, B., & Jiang, D. (2023) · International World Wide Web Conference (WWW) · doi:10.1145/3543507.3583294 · Cited by 20 · cited 3×
“Besides, LED [151] proposes to employ PLM-based lexical-aware models (i.”
MethodTowards Robust Ranker for Text Retrieval
Zhou, Y., Shen, T., Geng, X., Tao, C., Xu, C., Long, G., Jiao, B., & Jiang, D. (2023) · Findings of the Association for Computational Linguistics: ACL (Findings of ACL) · doi:10.18653/v1/2023.findings-acl.332 · Cited by 20
Multi-modal Retrieval of Tables and Texts Using Tri-encoder Models
Kostić, B., Risch, J., & Möller, T. (2021) · Workshop on Machine Reading for Question Answering (MRQA) · doi:10.18653/v1/2021.mrqa-1.8 · Cited by 20
Evaluating Token-Level and Passage-Level Dense Retrieval Models for Math Information Retrieval
Zhong, W., Yang, J.-H., Xie, Y., & Lin, J. (2022) · Findings of the Association for Computational Linguistics: EMNLP (Findings of EMNLP) · doi:10.18653/v1/2022.findings-emnlp.78 · Cited by 20
Li, H., Zhuang, S., Mourad, A., Ma, X., Lin, J., & Zuccon, G. (2022) · Lecture notes in computer science · doi:10.1007/978-3-030-99736-6_40 · Cited by 18
CCQA: A New Web-Scale Question Answering Dataset for Model Pre-Training
Huber, P., Aghajanyan, A., Oğuz, B., Okhonko, D., Yih, S., Gupta, S., & Chen, X. (2022) · Findings of the Association for Computational Linguistics: NAACL · doi:10.18653/v1/2022.findings-naacl.184 · Cited by 16
DuReader-Retrieval: A Large-scale Chinese Benchmark for Passage Retrieval from Web Search Engine
Qiu, Y., Li, H., Qu, Y., Chen, Y., She, Q., Liu, J., Wu, H. Y., & Wang, H. (2022) · Conference on Empirical Methods in Natural Language Processing (EMNLP) · doi:10.18653/v1/2022.emnlp-main.357 · Cited by 16
Self-citationSetRank: Learning a Permutation-Invariant Ranking Model for Information RetrievalPreprint
Pang, L., Xu, J., Ai, Q., Lan, Y., Cheng, X., & Wen, J.-R. (2019) · arXiv (Cornell University) · doi:10.48550/arxiv.1912.05891 · Cited by 14 · cited 2×
“A similar approach SetRank [280] has been proposed, though it does not use PLMs.”
MethodSelf-citationImplicit Feedback for Dense Passage Retrieval
Zhuang, S., Li, H., & Zuccon, G. (2022) · International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR) · doi:10.1145/3477495.3531994 · Cited by 11 · cited 1×
“[189] explore click-through data as feedback signal by using simulation based on click models, and then propose a counterfactual approach to dealing with the bias issue in click data.”
MethodLewis, P., Oğuz, B., Xiong, W., Petroni, F., Yih, S., & Riedel, S. (2022) · Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (NAACL-HLT) · doi:10.18653/v1/2022.naacl-main.226 · Cited by 11
An inverted index implementation
McDonell, K. J. (1977) · The Computer Journal · doi:10.1093/comjnl/20.2.116 · Cited by 10 · cited 1×
“In essence, inverted index maintains an efficient mapping from terms to their locations in documents [247].”
BackgroundDynamicRetriever: A Pre-training Model-based IR System with Neither Sparse nor Dense IndexPreprint
Zhou, Y., Yao, J., Dou, Z., Wu, L., & Wen, J.-R. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2203.00537 · Cited by 10 · cited 2×
“, passage, word sets and ngrams [301], [305]) or associated content (e.”
BackgroundMethodSelf-citationHLATR: Enhance Multi-stage Text Retrieval with Hybrid List Aware Transformer RerankingPreprint
Zhang, Y., Long, D., Xu, G., & Xie, P. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2205.10569 · Cited by 10 · cited 1×
“chitecture has been proposed [279] for multi-stage ranking optimization 22.”
BackgroundHofstätter, S., Khattab, O., Althammer, S., Sertkan, M., & Hanbury, A. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2203.13088 · Cited by 7 · cited 6×
“Considering this issue, some specific strategies proposed in ColBERTer [136] can be used to reduce the multi-representation costs, such as embedding”
BackgroundMethodInfluentialCheng, H., Fang, H., Liu, X., & Gao, J. (2023) · Proceedings of the conference - Association for Computational Linguistics. Meeting · doi:10.18653/v1/2023.acl-short.159 · Cited by 6
(2022) · doi:10.1145/3477495.3531658 · Cited by 6 · cited 2×
“An important merit is that the training can be decoupled from checkpoint validation with Asyncval.”
MethodSimple and Efficient ways to Improve REALM
Balachandran, V., Vaswani, A., Tsvetkov, Y., & Parmar, N. (2021) · Workshop on Machine Reading for Question Answering (MRQA) · doi:10.18653/v1/2021.mrqa-1.16 · Cited by 5
Densifying Sparse Representations for Passage Retrieval by Representational SlicingPreprint
Lin, S.-C., & Lin, J. (2021) · arXiv (Cornell University) · doi:10.48550/arxiv.2112.04666 · Cited by 5 · cited 2×
“[147], [206] propose to learn low-dimensional dense lexical representations (DLRs) by densifying high-dimensional sparse lexical representations, making it feasible to end-to-end learn lexical-semantic combined retrieval systems.”
BackgroundZhan, J., Mao, J., Liu, Y., Guo, J., Zhang, M., & Ma, S. (2022) · International Joint Conference on Artificial Intelligence · doi:10.24963/ijcai.2022/754 · Cited by 4
Hofstätter, S., Craswell, N., Mitra, B., Zamani, H., & Hanbury, A. (2022) · arXiv (Cornell University) · doi:10.48550/arxiv.2206.12993 · Cited by 2 · cited 2×
“Besides the effectiveness, the cost for maintenance and use is also important to consider for the practical deployment of dense retrieval systems [350].”
BackgroundBoosted Dense RetrieverPreprint
Lewis, P., Oğuz, B., Xiong, W., Petroni, F., Yih, W.-T., & Riedel, S. (2021) · arXiv (Cornell University) · doi:10.48550/arxiv.2112.07771 · Cited by 1 · cited 2×
“training + Mutual distillation 2021 AR2-G [121] ERNIEbase SR IOC DyHN Adversarial training 2021 RepCONC [122] BERTbase SR IOC DyHN Quantization 2021 RocketQAv2 [38] ERNIEbase SR KL SHN+DeHN KD Joint training + Mutual distillation 2021 SPAR [123] BERTbase SR NLL SHN KD 2021 SEED [124] BERTbase SR NLL DyHN TAP Autoencod…”
BackgroundMethod
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“In recent years, the neural IR [30, 55, 56] paradigm has gained considerable”
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Metadata
- Authors
- Zhao, W. X., Liu, J., Ren, R., & Wen, J.-R.
- Affiliations
- Renmin University of China (CN)
- Baidu (China) (CN)
- Venue
- ACM Transactions on Information Systems
- Published
- 2024-02-09
- Volume
- 42
- Issue
- 4
- Pages
- 1-60
- ISSN
- 1046-8188 (ISSN-L)
- 1558-2868
- OpenAlex
- W4389921502
- Cited by
- 211
- References
- 156
- Citations by year
- 2026: 72 · 2025: 79 · 2024: 40
- FWCI
- 49.52
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- ACM Transactions on Information Systems (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Natural Science Foundation of China (62222215, and U2001212)
- Beijing Natural Science Foundation (4222027)
- Topics
- Physical Sciences › Computer Science › Information Systems › Information Retrieval and Search Behavior
- Physical Sciences › Computer Science › Artificial Intelligence › Topic Modeling
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Advanced Image and Video Retrieval Techniques
- Keywords
- pre-trained language models, semantic matching, relevance modeling, text representation learning
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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