| 摘要 |
PROBLEM TO BE SOLVED: To provide a data retrieval system, a data retrieval method, a program to make a computer execute data retrieval, a computer-readable storage medium which stores the program, and a graphical user interface to display a retrieved document. SOLUTION: The data retrieval system comprises: a database 12 to hold data as a digitalized vector based on a keyword; a means 24 which creates a residual vector from the data, calculates a covariance matrix and an eigenvector of the covariance matrix, creates a set of base vectors from a set of the calculated eigenvectors and lets it be stored; a means 22 which reads out the data and at least one of the eigenvectors from the memory, calculates a degree of contribution of the eigenvector to the data, and reduces or stretches the residual vector and lets it be stored; and a means 16 which selects a keyword to be used for labelling from a similarity of the stored base vector and the data, and a weight to the similarity, and lets it be stored in the memory. COPYRIGHT: (C)2004,JPO
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