Information retrieval system, an information retrieval...

Details Information retrieval system, an information retrieval... Information retrieval system, an information retrieval...

2005-11-15

2005-11-15

Corrielus, Jean M. (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06965898

ABSTRACT:
To provide an information retrieval system, a method for information retrieval, a program for executing the information retrieval, and a storage medium comprising the program for executing the information retrievalThe information retrieval system according to the present invention comprises: means for generating and storing a predetermined type matrix from said document-attribute matrix, means for generating said document-attribute submatrix from documents being added to said database during a specific time period, means for updating said predetermined type matrix using knowledge with respect to said document-attribute submatrix and for executing the singular value decomposition on updated said predetermined type matrix to execute dimension reduction of all document-attribute matrices stored within said database, and means for retrieving information with respect to a user input query using said dimension reduced document-attribute matrix.

REFERENCES:
patent: 4839853 (1989-06-01), Deerwester et al.
Berry et al. (“Using Linear Algebra for Intelligent Information Retrieval”, Dec. 1994, pp. 2-24, ACM).
Witter et al. (“Downdating the Latent Semantic Indexing Model for Conceptual Information Retrieval”, the computer journal, 1998, vol. 41, No. 8, pp. 589-601).
Zha et al. (“On Updating Problems In Latent Semantic Indexing”, SIAM Journal on Scientific Computing, 21(2): 782-791, 1999).
Goldberg (“What Every Computer Scientist Should Know About Floating-Point Arithmetic”, ACM, vol. 23, No. 1, Mar. 1991).

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