System, method and computer executable program for...

Details System, method and computer executable program for... System, method and computer executable program for...

2011-08-09

2011-08-09

To, Baoquoc (Department: 2162)

Data processing: database and file management or data structures

Database and file access

Preparing data for information retrieval

C707S738000

Reexamination Certificate

active

07996407

ABSTRACT:
A system for information clustering comprising a data accumulation part for accumulating documents in a document repository, the documents having loosely related attributes, and defining a cluster between the documents being time sliced so as to define chunks of the documents; a vector space generation part for generating document-keyword vectors, the document-keyword vectors consisting of sparse numeral values depending on presence of key words; a dimension reduction part for reducing dimensions of the keywords to create a dimension reduction matrix of the document-keyword matrix; a centroid vector determination part for generating a centroid vector of the cluster, the centroid vectors being defined from keywords and weight of documents within the cluster; and an item repository for storing the centroid vectors together with the keywords and the weights of the centroid vector.

REFERENCES:
patent: 2008/0294651 (2008-11-01), Masuyama et al.
patent: PUPA 2001-117930 (2001-04-01), None
patent: 2001-312505 (2001-09-01), None
patent: 2002-024268 (2002-01-01), None
patent: 2003-141160 (2003-05-01), None
Kobayashi, et al, “Vector Space Models for Search and Cluster Mining”, Survey of Text Mining II, Springer, London 2008.
Yamashita, Y., et al, “Detecting and Tracking the Evolution of Events”, Technical Report of Information Processing Society of Japan, vol. 2002, No, 101, pp. 31-38, Nov. 6, 2002.

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