NIST Special Publication:
NIST SP 500-335

The Thirtieth Text REtrieval Conference
(TREC 2021) Proceedings

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NOTE: All papers are available in PDF format.

The inclusion or omission of a particular company or product implies neither endorsement nor criticism by NIST. Any opinions, findings, and conclusions or recommendations expressed in the individual papers are the authors' own and do not necessarily reflect those of the sponsors.


Overview Papers

  • PDF file [Overview_TREC] Overview of TREC 2021
    Ian Soboroff - NIST

  • PDF file [Overview_CAsT] TREC CAsT 2021: The Conversational Assistance Track Overview
    Jeffrey Dalton - University of Glasgow
    Chenyan Xiong - Microsoft Research
    Jamie Callan - Carnegie Mellon University

  • PDF file [Overview_Deep_Learning] Overview of the TREC 2021 Deep Learning Track
    Nick Craswell and Bhaskar Mitra - Microsoft
    Emine Yilmaz - University College London
    Daniel Campos - University of Illinois Urbana-Champaign and Neural Magic Inc.
    Jimmy Lin - University of Waterloo

  • PDF file [Overview_Fair_Ranking] Overview of the TREC 2021 Fair Ranking Track
    Michael D. Ekstrand and Amifa Raj - Boise State
    Graham McDonald - University of Glasgow
    Isaac Johnson - WIKIMEDIA

  • PDF file [Overview_Health] Overview of the TREC 2021 Health Misinformation Track
    Charles L. A. Clarke, University of Waterloo
    Maria Maistro, University of Copenhagen
    Mark D. Smucker, University of Waterloo

  • PDF file [Overview_Podcasts] TREC 2021 Podcasts Track Overview
    Jussi Karlgren, Rosie Jones, Ben Carterette, Ann Clifton and Edgar Tanaka - Spotify
    Maria Eskevich - CLARIN ERIC
    Gareth J. F. Jones - Dublin City University
    Sravana Reddy - ASAPP

  • Participant Papers

  • PDF file [ALIBABA] Alibaba DAMO Academy at TREC Clinical Trials 2021: Exploring Embedding-based First-stage Retrieval with TrialMatcher
    Qiao Jin, Zhengyun Zhao, Zheng Yuan - Tsinghua University
    Qiao Jin, Chuanqi Tan, Zheng Yuan and Songfang Huang - Alibaba Inc.

  • PDF file [BITEM] SIB Text Mining at TREC Clinical Trials 2021
    Deborah Caucheteura, Emilie Pasche, Luc Mottin, Anais Mottaz, Julien Gobeill and Patrick Ruch - HES-SO / HEG Geneva, Information Sciences, Geneva, Switzerland
    Deborah Caucheteura, Emilie Pasche, Luc Mottin, Anais Mottaz, Julien Gobeill and Patrick Ruch - SIB Text Mining, Swiss Institute of Bioinformatics, Geneva, Switzerland
    Luc Mottin - Department of Microbiology and Molecular Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland

  • PDF file [CERTH_ITI_M4D] M4D-MKLab/ITI-CERTH Participation in TREC Deep Learning Track 2021
    Alexandros-Michail Koufakis, Theodora Tsikrika, Stefanos Vrochidis and Ioannis Kompatsiaris - Information Technologies Institute, Centre for Research and Technology Hellas, Thermi-Thessaloniki, Greece

  • PDF file [CFDA_CLIP] An Exploration Study of Multi-stage Conversational Passage Retrieval: Paraphrase Query Expansion and Multi-view Point-wise Ranking
    Jia-Huei Ju, Chih-Ting Yeh, Cheng-Wei Lin, Chia-Ying Tsao, Jun-En Ding and Chuan-Ju Wang - Research Center for Information Technology Innovation, Academia Sinica
    Ming-Feng Tsai - Department of Computer Science, National Chengchi University

  • PDF file [CincyMedIR] CincyMedIR at TREC 2021 Clinical Trial Track
    Hoang Vu, MSI - Department of Biomedical Informatics, University of Cincinnati College of Medicine, Cincinnati, OH; Department of Electrical Engineering and Computer Science, College of Engineering and Applied Science
    Danny T.Y. Wu, PhD - University of Cincinnati, Cincinnati, OH

  • PDF file [CIP] CIP at TREC 2021 Deep Learning Track
    Xuanang Chen, Ben He and Yingfei Sun - University of Chinese Academy of Sciences, Beijing, China
    Xuanang Chen, Ben He and Le Sun - Chinese Information Processing Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing, China

  • PDF file [CiTIUS] CiTIUS at the TREC 2021 Health Misinformation Track
    Marcos Fernandez-Pichel, Manuel Prada-Corral, David E. Losada, Juan C. Pichel and Pablo Gamallo - Centro Singular de Investigacion en Tecnoloxías Intelixentes (CiTIUS), Universidade de Santiago de Compostela 15782 Santiago de Compostela, Spain

  • PDF file [clinical_trials] An approach to relevant clinical trials retrieving
    Mariia Fedorova - ElmDoc B.V.

  • PDF file [CMU-LTI] Query Rewriting with Expansion and Multi-Turn Entity Graphs for Answer Selection
    Nour Jedidi, Gustavo Goncalves and Jamie Callan - Language and Technology Institute, Carnegie Mellon University, USA
    Gustavo Goncalves - NOVA LINCS, Universidade NOVA de Lisboa, Portugal

  • PDF file [CNR] Finding Context through Utterance Dependencies in Search Conversations - Participation of the CNR Team in CAsT 2021
    Ida Mele - IASI-CNR, Rome, Italy
    Cristina Ioana Muntean, Franco Maria Nardini and Raffaele Perego - ISTI-CNR, Pisa, Italy
    Nicola Tonellotto - University of Pisa, Italy

  • PDF file [CSIROmed] CSIROmed Team Report of TREC 2021 Clinical Trials track: Experiments with BERT Reranking Methods
    Maciej Rybinski, Vincent Nguyen and Sarvnaz Karimi - CSIRO Data61, Sydney, Australia

  • PDF file [DigiLab] DS4DH at TREC Health Misinformation 2021: Multi-Dimensional Ranking Models with Transfer Learning and Rank Fusion
    Boya Zhang, Fernando Jaume-Santero and Douglas Teodoro - Department of Radiology and Medical Informatics, University of Geneva
    Nona Naderi and Douglas Teodoro - HES-SO University of Applied Sciences and Arts of Western Switzerland Swiss Institute of Bioinformatics
    Nona Naderi and Douglas Teodoro - Swiss Institute of Bioinformatics

  • PDF file [DOSSIER] DOSSIER at TREC 2021 Clinical Trials Track
    Wojciech Kusa and Yasin Ghafourian - TU Wien, Vienna, Austria
    Yasin Ghafourian - Research Studios Austria, Vienna, Austria

  • PDF file [FUH] University of Hagen @ TREC2021 News Track
    Stefan Wagenpfeil and Matthias Hemmje - Faculty of Mathematics and Computer Science, University of Hagen, Germany
    Paul Mc Kevitt - Academy for International Science & Research (AISR), Derry/Londonderry, Ireland

  • PDF file [GU_BioMed] Clinical Trial Search Using Lucene and UMLS
    Yanqing Ji - Department of Electrical and Computer Engineering, Gonzaga University, Spokane, Washington, USA
    Yun Tian - Department of Computer Sci. and Electrical Eng., Eastern Washington University, Spokane WA, USA
    Hao Ying - Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan, USA
    John Tran - Department of Psychiatry, University of California San Francisco at Fresno, Fresno, California, USA

  • PDF file [IBMResearch] IBM @ TREC Clinical Trials Track 2021
    Laura Biester - Computer Science & Engineering, University of Michigan
    Venkata Joopudi and Bharath Dandala - IBM Research

  • PDF file [IHSM] QUALITY AND COST TRADE-OFFS IN PASSAGE RE-RANKING TASK
    Pavel Podberezko, Vsevolod Mitskevich, Raman Makouski, Pavel Goncharov, Andrei Khobnia, Nikolai Bushkov and Marina Chernyshevich - IHS Markit

  • PDF file [IITD-DBAI] IITD-DBAI: Multi-Stage Retrieval with Pseudo-Relevance Feedback and Query Reformulation
    Shivani Choudhary - Indian Institute of Technology, Delhi

  • PDF file [ims_unipd] Filter, Transform, Expand, and Fuse The IMS Unipd at TREC 2021 Clinical Trials
    Giorgio Maria Di Nunzio, Guglielmo Faggioli and Stefano Marchesin - Department of Information Engineering, University of Padua, Italy

  • PDF file [IR-Cologne] IRCologne at TREC 2021 News Track Relation-based re-ranking for background linking
    BJORN ENGELMANN and PHILIPP SCHAER - TH Koln (University of Applied Sciences), Germany

  • PDF file [IRlab-Amsterdam] IRLab-Amsterdam at TREC 2021 Conversational Assistant Track
    Antonios Minas Krasakis and Evangelos Kanoulas - University of Amsterdam, The Netherlands

  • PDF file [IRlab-Amsterdam] The University of Amsterdam at the TREC 2021 Fair Ranking Track
    Ali Vardasbi, Gabriel Bénédict, Shashank Gupta, Maria Heuss, Pooya Khandel, Ming Li and Fatemeh Sarvi - University of Amsterdam, The Netherlands

  • PDF file [IRUniDUE] TREC 2021⋆ Clinical Trials Retrieval, Duisburg-Essen University submission
    Sameh Frihat and Norbert Fuhr - University of Duisburg-Essen, Duisburg, Germany

  • PDF file [ITTC-AIMedTech] ITTC @ TREC 2021 Clinical Trials Track
    Hung-Thinh Truong, Yulia Otmakhova, Timothy Baldwin, Jey Han Lau, Trevor Cohn and Karin Verspoor - The University of Melbourne
    Rahmad Mahendra, Karin Verspoor, Lawrence Cavedon, Damiano Spina and Karin Verspoor - RMIT University

  • PDF file [L3i_Rochelle] Transformer-based Methods with #Entities for Detecting Emergency Events on Social Media
    Emanuela Boros, Nhu Khoa Nguyen, Mickael Coustaty and Antoine Doucet - University of La Rochelle, L3i, La Rochelle, France
    Gael Lejeune - Sorbonne University, STIH/CERES, Paris, France

  • PDF file [L3i_Rochelle] Elastic Embedded Background Linking for News Articles with Keywords, Entities and Events
    Luis Adrian Cabrera-Diego, Emanuela Boros and Antoine Doucet - University of La Rochelle, L3i, La Rochelle, France

  • PDF file [L3S] L3S at the TREC 2021 Deep Learning Track
    Jurek Leonhardt and Avishek Anand - L3S Research Center,Hannover, Germany
    Koustav Rudra - Indian Institute of Technology (ISM) Dhanbad, India

  • PDF file [middlebury] Middlebury at TREC News ’21 Exploring Learning to Rank Model Variants
    Culton Koster and John Foley - Department of Computer Science, Middlebury College, Middlebury, VT

  • PDF file [MLIA-LIP6] MLIA-LIP6@TREC-CAST2021: Feature augmentation for query recontextualization and passage ranking
    Nawel Astaouti, Thomas Gerald, Maya Touzari and Laure Soulier - CNRS-ISIR, Sorbonne University, Paris, France
    Jian-Yun Nie - University of Montreal, Montreal, Canada

  • PDF file [njit] Method Comparison for Crisis Pipelines
    Shivam Sharma and Cody Buntain - New Jersey Institute of Technology

  • PDF file [NLE] NAVER LABS EUROPE (SPLADE) @ TREC DEEP LEARNING 2021
    Carlos Lassance, Arnaud Sors and Stephane Clinchant - Naver Labs Europe, France
    Thibault Formal - Naver Labs Europe and Sorbonne Universite, ISIR, France
    Benjamin Piwowarski - Sorbonne Universite, ISIR, CNRS, France

  • PDF file [NTU_NLP] Hybrid Re-ranking for Biomedical Information Retrieval at the TREC 2021 Clinical Trials Track
    Ming-Xuan Shi, Tsung-Hsuan Pan and Hsin-Hsi Chen - Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan
    Hen-Hsen Huang - Institute of Information Science, Academia Sinica, Taipei, Taiwan

  • PDF file [PASH] PASH at TREC 2021 Deep Learning Track: Generative Enhanced Model for Multi-stage Rankingtrack: DL
    Yixuan Qiao, Hao Chen, Jun Wang, Peng Gao, and Guotong Xie - Ping An Health Technology, Beijing, China
    Tuozhen Liu - Central University of Finance and Economics, Beijing, China
    Xianbin Ye - Jinan University, Guangzhou, China
    Guotong Xie - Ping An Health Cloud Company Limited., Shenzhen, China and Ping An International Smart City Technology Co., Ltd., Shenzhen, China

  • PDF file [PoliTO] PoliTO at TREC 2021 Podcast Summarization Track
    Lorenzo Vaiani, Moreno La Quatra, Luca Cagliero and Paolo Garza - Dipartimento di Automatica e Informatica Politecnico di Torino, Italy

  • PDF file [POZNAN] Pozna´n Contribution to TREC Clinical Trials 2021⋆
    Jakub Dutkiewicz and Czeslaw Jedrzejek - Faculty of Computing, Poznan University of Technology, Poznan, Poland

  • PDF file [QU] bigIR at TREC 2021: Adopting Transfer Learning for News Background Linking
    Marwa Essam and Tamer Elsayed - Computer Science and Engineering Department, Qatar University, Doha, Qatar

  • PDF file [RMIT-IR] RMIT at TREC 2021 Fair Ranking Track
    SACHIN PATHIYAN CHERUMANAL, DAMIANO SPINA and FALK SCHOLER - RMIT University, Australia
    W. BRUCE CROFT - University of Massachusetts Amherst, USA

  • PDF file [RUIR] Radboud University at TREC CAsT 2021
    Hideaki Joko, Emma J. Gerritse, Faegheh Hasibi, and Arjen P. de Vries - Radboud University, Nijmegen, The Netherlands

  • PDF file [SienaCLTeam] Siena’s Incident Stream System SISS
    Ting Liu, Sharon Gower Small, Patrick Baumgardner, Lydia Cartwright, Michael Coppola and Samuil Orlioglu - Siena College Institute for Artificial Intelligence, Loudonville, NY

  • PDF file [SU-NLP] SU-NLP at TREC NEWS 2021
    Kenan Fayoumi and Reyyan Yeniterzi - Sabancı University, Istanbul, Turkey

  • PDF file [TDMINER] The Application of Traditional IE as a Non-traditional Method in an IR Task: TDMINER at 2021 TREC Clinical Trials
    Chengyi Zheng - Kaiser Permanente Southern California, Pasadena, CA

  • PDF file [TKB48] TKB48 at TREC 2021 Conversational Assistance Track
    Yubo Fang - Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
    Hideo Joho - Faculty of Library, Information and Media Science, University of Tsukuba, Ibaraki, Japan
    Sumio Fujita - Yahoo Japan Corporation, Tokyo, Japan

  • PDF file [TKB48] TKB48 at TREC 2021 Fairness Ranking Track
    Jin Zhuoqi - Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
    Hideo Joho - Faculty of Library, Information and Media Science, University of Tsukuba, Ibaraki, Japan
    Sumio Fujita - Yahoo Japan Corporation, Tokyo, Japan

  • PDF file [TKB48] TKB48 at TREC 2021 News Track
    Zhang Lirong - Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan
    Hideo Joho - Faculty of Library, Information and Media Science, University of Tsukuba, Ibaraki, Japan
    Sumio Fujita - Yahoo Japan Corporation, Tokyo, Japan

  • PDF file [TU_Vienna] TU Wien at TREC DL and Podcast 2021: Simple Compression for Dense Retrieval
    Sebastian Hofstatter, Mete Sertkan and Allan Hanbury - TU Wien

  • PDF file [UAmsterdam] Recall Aspects of Transformers for Text Ranking
    David Rau and Jaap Kamps - University of Amsterdam

  • PDF file [UCD-CS] UCD-CS at TREC 2021 Incident Streams Track
    Congcong Wang and David Lillis - School of Computer Science, University College Dublin, Ireland

  • PDF file [UiS] The University of Stavanger (IAI) at the TREC 2021 Conversational Assistance Track
    Ivica Kostric, Krisztian Balog, Magnus Book, Trond Linjordet, and Vinay Setty - University of Stavanger, Norway

  • PDF file [UMD] Full-Collection Search with Passage and Document Evidence: Maryland at the TREC 2021 Conversational Assistance Track
    Xin Qian and Douglas W. Oard - University of Maryland, College Park

  • PDF file [uni_pais_vasco] TREC 2021 Clinical Trials Submission for Universidad del País Vasco
    Jordan Koontz - Ixa (UPV/EHU)
    Maite Oronoz and Alicia Pérez - HiTZ (UPV/EHU)

  • PDF file [Unicamp] Multilingual Podcast Summarization using Longformers
    Edgar Tanaka, Ann Clifton and Md. Iftekhar Tanveer - Spotify

  • PDF file [UNIMIB] UNIMIB at TREC 2021 Clinical Trials Track
    Georgios Peikos, Oscar Espitia, and Gabriella Pasi - Information and Knowledge Representation, Retrieval, and Reasoning (IKR3) Lab, Department of Informatics, Systems, and Communication (DISCo), University of Milano-Bicocca, Milan, Italy

  • PDF file [UNTIIA] UNTIIA Lab at TREC 2021 - Clinical Trial*
    Huyen Nguyen, Haihua Chen, Bhanu Prasad and Junhua Ding - Intelligent Information Access Laboratory, University of North Texas
    Huyen Nguyen, Haihua Chen, Bhanu Prasad, Junhua Ding, Jiangping Chen and Ana Cleveland - Department of Information Science, University of North Texas
    Huanhuan Zhao - Department of Bioinformatics, University of Texas at El Paso

  • PDF file [uogTr] University of Glasgow Terrier Team (uogTr) at the TREC 2021 Incident Streams Track
    Xiao Wang, Sean MacAvaney, Craig Macdonald and Iadh Ounis - University of Glasgow, UK
    Thomas Jaenich, Graham McDonald and Iadh Ounis - University of Glasgow, UK
    Alexander J. Hepburn and Richard McCreadie - University of Glasgow, UK

  • PDF file [uogTr] University of Glasgow Terrier Team (uogTr) at the TREC 2021 Incident Streams Track
    Xiao Wang, Sean MacAvaney, Craig Macdonald and Iadh Ounis - University of Glasgow, UK
    Thomas Jaenich, Graham McDonald and Iadh Ounis - University of Glasgow, UK
    Alexander J. Hepburn and Richard McCreadie - University of Glasgow, UK

  • PDF file [uogTr] University of Glasgow Terrier Team (uogTr) at the TREC 2021 Incident Streams Track
    Xiao Wang, Sean MacAvaney, Craig Macdonald and Iadh Ounis - University of Glasgow, UK
    Thomas Jaenich, Graham McDonald and Iadh Ounis - University of Glasgow, UK
    Alexander J. Hepburn and Richard McCreadie - University of Glasgow, UK

  • PDF file [UPV] UPV at TREC Health Misinformation Track 2021 Ranking with SBERT and Quality Estimators
    Ipek Baris Schlicht, Angel Felipe Magnossao de Paula and Paolo Rosso - Universitat Politecnica de Valencia, Spain

  • PDF file [UwaterlooMDS] UWaterlooMDS at the TREC 2021 Health Misinformation Track
    MUSTAFA ABUALSAUD, KAMYAR GHAJAR, LINH NHI PHAN MINH and DAKE ZHANG - David R. Cheriton School of Computer Science, University of Waterloo
    IRENE XIANGYI CHEN - Department of Electrical and Computer Engineering, University of Waterloo
    MARK D. SMUCKER and AMIR VAKILI TAHAMI - Department of Management Sciences, University of Waterloo

  • PDF file [Waterloo_Cormack] Semantic Search for Background Linking in News Articles
    Udhav Sethi and Anup Anand Deshmukh - University of Waterloo

  • PDF file [WaterlooClarke] WaterlooClarke at the TREC 2021 Conversational Assistant Track
    Xinyi Yan, Charles L. A. Clarke and Negar Arabzadeh -

  • PDF file [Webis] Webis at TREC 2021: Deep Learning, Health Misinformation, and Podcasts Tracks
    Alexander Bondarenko, Maik Frobe, Sebastian Gunther and Matthias Hagen - Martin-Luther-Universitat Halle-Wittenberg
    Marcel Gohsen, Johannes Kiesel, Michael Volske and Benno Stein - Bauhaus-Universitat Weimar
    Jakob Schwerter, Shahbaz Syed and Martin Potthast - Leipzig University

  • PDF file [wispermedtxt] WisPerMed Text at TREC Clinical Trials Track 2021
    Henning Schafer - Institute for Transfusion Medicine, University Hospital Essen, Germany
    Ahmad Idrissi-Yaghir and Christoph M. Friedrich - Department of Computer Science, University of Applied Sciences and Arts Dortmund (FHDO), Dortmund, Germany
    Wolfgang Galetzka and Christoph M. Friedrich - Institute of Medical Informatics, Biometry and Epidemiology (IMIBE), University Hospital Essen, Germany
    Marie Bexte - Language Technology Lab, University of Duisburg-Essen, Duisburg, Germany

  • PDF file [yorku] York University at TREC 2021: Deep Learning Track
    Yizheng Huang and Jimmy Huang - Information Retrieval and Knowledge Management Research Lab, York University, Toronto, Canada

  • Appendix


    Last updated: Tuesday, 07-Jun-2022 12:00:49 EDT
    Date created: March 22, 2022
    trec@nist.gov