Go to:
Logótipo
Comuta visibilidade da coluna esquerda
Você está em: Start > Publications > View > Segmented principal component transform-principal component analysis
Publication

Publications

Segmented principal component transform-principal component analysis

Title
Segmented principal component transform-principal component analysis
Type
Article in International Scientific Journal
Year
2005
Authors
Barros, AS
(Author)
Other
View Personal Page You do not have permissions to view the institutional email. Search for Participant Publications View Authenticus page Without ORCID
Rutledge, DN
(Author)
Other
The person does not belong to the institution. The person does not belong to the institution. The person does not belong to the institution. Without AUTHENTICUS Without ORCID
Journal
Vol. 78
Pages: 125-137
ISSN: 0169-7439
Publisher: Elsevier
Other information
Authenticus ID: P-000-2AF
Abstract (EN): A new approach to perform Principal Component Analysis (PCA) on very wide matrices is proposed in this work. The procedure is based on an extension of the Principal Component Transform (PCT) concept-the PCT being applied to non-superimposed segments of the data matrix. It is shown that this method uses less memory than the classical global PCA since the decomposition is done on much smaller matrices, which has an important impact on the memory requirements. It is also shown that the Segmented PCT-PCA (SegPCT-PCA) yields the same results as the decomposition performed by a global PCA. This approach will allow the study of very wide data sets (e.g. 2D-NMR), which were difficult to do using the global PCA approach. The implementation of SegPCT-PCA is straightforward. An advantage of the method is that it is not necessary to read the complete matrix into the main memory, which could be an advantage for parallel calculations and for cross-validation purposes. (c) 2005 Published by Elsevier B.V.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 13
Documents
We could not find any documents associated to the publication.
Related Publications

Of the same authors

Segmented principal component transform-partial least squares regression (2007)
Article in International Scientific Journal
Barros, AS; Pinto, R; Delgadillo, I; Rutledge, DN
Relations between mid-infrared and near-infrared spectra detected by analysis of variance of an intervariable data matrix (1997)
Article in International Scientific Journal
Barros, AS; Safar, M; Devaux, MF; Robert, P; Bertrand, D; Rutledge, DN
Principal component transform - Outer product analysis in the PCA context (2008)
Article in International Scientific Journal
Barros, AS; Pinto, R; Bouveresse, DJR; Rutledge, DN

See all (20)

Of the same journal

STUDY OF AQUEOUS ACIDIC PROPERTIES OF FULVIC-ACIDS BY EVOLVING FACTOR-ANALYSIS OF PH + FT-IR TITRATION DATA (1992)
Article in International Scientific Journal
Machado, AASC; Esteves da Silva, JCG
Structural analysis of alpha-glucosidase inhibitors by validated QSAR models using topological and hydrophobicity based descriptors (2011)
Article in International Scientific Journal
Hari Narayana H N Moorthy; Maria J Ramos; Pedro A Fernandes
Segmented principal component transform-partial least squares regression (2007)
Article in International Scientific Journal
Barros, AS; Pinto, R; Delgadillo, I; Rutledge, DN
Principal component transform - Outer product analysis in the PCA context (2008)
Article in International Scientific Journal
Barros, AS; Pinto, R; Bouveresse, DJR; Rutledge, DN

See all (17)

Recommend this page Top
Copyright 1996-2025 © Faculdade de Direito da Universidade do Porto  I Terms and Conditions  I Acessibility  I Index A-Z
Page created on: 2025-07-10 at 13:48:46 | Privacy Policy | Personal Data Protection Policy | Whistleblowing