Glasgow Information Retrieval Group - Information Retrieval Group at the Department Computing Science, led by Professor Keith van Rijsbergen, University of Glasgow, Scotland, UK.
NGIR: Next Generation Information Retrieval group - The group uses probabilistic and information-theoretic methods to model information retrieval, and is committed to open source software development. The group also believes distributed, semantic-based and multilingual methods will have a central role in the future of information retrieval.
NIST Information Retrieval Group - Information retrieval group in the National Institutes of Standards and Technology. It is most famous for organizing TREC conferences.
