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Standard Reference Data, NIST:
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Text and Video Retrieval
The NIST TREC Document Databases are distributed for the development and testing of information retrieval systems and related natural language processing research. NIST Digital Video 1 is a public-domain collection of digital video created to encourage more researchers to support the scientific comparison of solutions of digital video search, retrieval, and display.
The codes in the list below have the following meanings: