Patent ID: 6728932
Filing Date: 2004-04-27
Classification: G06F,Y10S

Abstract:
A method for clustering documents comprising:generating a hybrid matrix of vectors comprising a first vector representing a first document and a second vector representing a log-based document cluster; and clustering the documents using the hybrid matrix, wherein the step of generating the hybrid matrix comprises: accessing retrieval session logs; clustering retrieval sessions into session clusters; generating, for each session cluster, a log-based document cluster by combining all documents opened during any retrieval session of the session cluster; generating a log-based document cluster vector for each of the log-based document clusters; replacing each document in the log-based document cluster with the log-based document cluster vector; generating an individual document vector for each document not opened during any retrieval session; and combining the log-based document cluster vector and the individual document cluster vector, wherein the log-based document cluster is formed by concatenating the documents to be combined.