US9037573B2
patent
(2006.01) (2012.01) An information retrieval system uses phrases to index, retrieve, organize and describe documents. Phrases are iden tified that predict the presence of other phrases in documents. Documents are the indexed according to their included phrases. Related phrases and phrase extensions are also iden tified. Phrases in a query are identified and used to retrieve
7 claims. 133,790 characters of text.