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Article type: Research Article
Authors: Partridge, Matthewa; * | Calvo, Rafael A.b; 1
Affiliations: [a] Sedal Department of Electrical Engineering, University of Sydney NSW; Sydney 2006, Australia | [b] LTI, School of Computer Science, 4919 Forbes Avenue, Pittsburgh, PA 15213-3702, USA
Correspondence: [*] Corresponding author. E-mail: mp@sedal.usyd.edu.au. URL: http://www.sedal.usyd.edu.au/~mp.
Note: [1] E-mail: rafa@sedal.usyd.edu.au.
Abstract: A fast and simple algorithm for approximately calculating the principal components (PCs) of a dataset and so reducing its dimensionality is described. This Simple Principal Components Analysis (SPCA) method was used for dimensionality reduction of two high-dimensional image databases, one of handwritten digits and one of handwritten Japanese characters. It was tested and compared with other techniques. On both databases SPCA shows a fast convergence rate compared with other methods and robustness to the reordering of the samples.
Keywords: Principal component analysis, Matrix diagonalization, Hebbian learning, Image compression
DOI: 10.3233/IDA-1998-2304
Journal: Intelligent Data Analysis, vol. 2, no. 3, pp. 203-214, 1998
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