The method and apparatus of the present invention generates clusters of documents in a collection of linked documents based on co-citation analysis. The frequency linkage is determined for each document in the collection. In other words, the number of times each document is linked to by another document...http://www.google.com.au/patents/US6038574?utm_source=gb-gplus-sharePatent US6038574 - Method and apparatus for clustering a collection of linked documents using co-citation analysis
