14. A program storage device readable by a machine, tangibly embodying a program of instructions executable by the machine to perform method steps for the clustering of documents in a collection of linked documents, said method steps comprising: a) specifying a link frequency threshold, said link frequency threshold indicating a number of times a document is linked to from another document in said collection; b) for each document in said collection, determining an associated link frequency; c) discarding each document in said collection whose link frequency is lower than said link frequency threshold; d) creating a co-citation list, said co-citation list comprised of pairs of documents that are linked to by the same document in said collection; and e) performing a suitable clustering operation on said co-citation list to generate document clusters.
15. The program storage device as recited in claim 14 wherein said method steps are further comprised of the steps of: f) displaying a visualization of said document clusters; g) determining if said generated document clusters provides acceptable clustering results; h) if said generated document clusters does not provide acceptable clustering results, varying the value of said link frequency threshold; and i) repeating steps b)-f).