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Overview of TREC 2021



Ian Soboroff


TREC 2021 is the thirtieth edition of the Text REtrieval Conference (TREC). The main goal of TREC is to create the evaluation infrastructure required for large-scale testing of retrieval technology. This includes research on best methods for evaluation as well as development of the evaluation materials themselves. "Retrieval technology" is broadly interpreted to include a variety of techniques that enable and/or facilitate access to information that is not specifically structured for machine use. The TREC 2021 meeting was held at the National Institute of Standards and Technology (NIST) November 15–19, 2021.
Special Publication (NIST SP) - NIST SP 500-335
Report Number
NIST SP 500-335


search, information retrieval, technology evaluations


Soboroff, I. (2022), Overview of TREC 2021, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed April 18, 2024)
Created May 6, 2022, Updated February 24, 2023