Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10071/10076
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Lavado, N. | - |
dc.contributor.author | Calapez, T. | - |
dc.date.accessioned | 2015-11-03T15:38:29Z | - |
dc.date.available | 2015-11-03T15:38:29Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 1992-9978 | por |
dc.identifier.uri | https://ciencia.iscte-iul.pt/public/pub/id/315 | - |
dc.identifier.uri | http://hdl.handle.net/10071/10076 | - |
dc.description.abstract | A new approach to generalize Principal Components Analysis in order to handle nonlinear structures has been recently proposed by the authors: quasi-linear PCA (qlPCA). It includes spline transformation of the original variables and the qualifier quasi was chosen to emphasize the exclusive use of linear splines. Alternating least squares fitting of a suitable objective loss function is the mechanism for achieving spline optimal transformation and nonlinear principal components. Optimal transformations are explicitly known after convergence and allow a straightforward projection of new observations onto the nonlinear principal components space as well as reconstruction the original variables. QlPCA reports model summary in a linear PCA fashion and allows the introduction of the piecewise loadings concept. This paper provides further details on qlPCA and its properties. Results of a simulation study are also presented. | por |
dc.language.iso | eng | por |
dc.publisher | IAENG - International Association of Engineers | por |
dc.rights | embargoedAccess | por |
dc.subject | CATPCA | por |
dc.subject | Linear PCA | por |
dc.subject | Nonlinear principal components analysis | por |
dc.subject | qLPCA | por |
dc.title | Principal components analysis with spline optimal transformations for continuous data | por |
dc.type | article | en_US |
dc.pagination | 367-375 | por |
dc.publicationstatus | Publicado | por |
dc.peerreviewed | Sim | por |
dc.relation.publisherversion | The definitive version is available at: http://www.iaeng.org/IJAM/issues_v41/issue_4/IJAM_41_4_14.pdf | por |
dc.journal | IAENG International Journal of Applied Mathematics | por |
dc.distribution | Internacional | por |
dc.volume | 41 | por |
dc.number | 4 | por |
degois.publication.firstPage | 367 | por |
degois.publication.lastPage | 375 | por |
degois.publication.issue | 4 | por |
degois.publication.title | IAENG International Journal of Applied Mathematics | por |
dc.date.updated | 2015-11-03T15:35:54Z | - |
Aparece nas coleções: | DINÂMIA'CET-RI - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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publisher_version_IJAM_41_4_14.pdf Restricted Access | 639,09 kB | Adobe PDF | Ver/Abrir Request a copy |
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