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The TREC Conference series is co-sponsored by the NIST Information Technology Laboratory's (ITL) Retrieval Group of the Information Access Division (IAD) Contact us at: trec (at) nist.gov
As part of the TREC 2011 microblog track, Twitter provided identifiers for approximately 16 million tweets sampled between January 23rd and February 8th, 2011. The corpus is designed to be a reusable, representative sample of the twittersphere - i.e. both important and spam tweets are included. The Tweets2011 corpus is unusual in that what you get is a list of tweet identifiers, and the actual twe
Reuters Corpora (RCV1, RCV2, TRC2) In 2000, Reuters Ltd made available a large collection of Reuters News stories for use in research and development of natural language processing, information retrieval, and machine learning systems. This corpus, known as "Reuters Corpus, Volume 1" or RCV1, is significantly larger than the older, well-known Reuters-21578 collection heavily used in the text classi
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