Results 31 to 40 of about 2,126,918 (327)

Principal component analysis applied to remote sensing

open access: yesModelling in Science Education and Learning, 2013
The main objective of this article was to show an application of principal component analysis (PCA) which is used in two science degrees. Particularly, PCA analysis was used to obtain information of the land cover from satellite images.
Javier Estornell   +3 more
doaj   +1 more source

Comparison of Statistical Underlying Systematic Risk Factors and Betas Driving Returns on Equities

open access: yesRevista Mexicana de Economía y Finanzas Nueva Época REMEF, 2021
The objective of this paper is to compare four dimension reduction techniques used for extracting the underlying systematic risk factors driving returns on equities of the Mexican Market.
Rogelio Ladrón de Guevara Cortés   +2 more
doaj   +1 more source

Quantum principal component analysis [PDF]

open access: yesNature Physics, 2014
9 pages, Plain ...
Lloyd, Seth   +2 more
openaire   +5 more sources

Multiscale principal component analysis

open access: yes, 2013
Principal component analysis (PCA) is an important tool in exploring data. The conventional approach to PCA leads to a solution which favours the structures with large variances.
Akinduko, A. A., Gorban, A. N.
core   +1 more source

Parameterized principal component analysis [PDF]

open access: yesPattern Recognition, 2018
When modeling multivariate data, one might have an extra parameter of contextual information that could be used to treat some observations as more similar to others. For example, images of faces can vary by age, and one would expect the face of a 40 year old to be more similar to the face of a 30 year old than to a baby face.
Ajay Gupta, Adrian Barbu
openaire   +2 more sources

Lazy stochastic principal component analysis

open access: yes, 2017
Stochastic principal component analysis (SPCA) has become a popular dimensionality reduction strategy for large, high-dimensional datasets. We derive a simplified algorithm, called Lazy SPCA, which has reduced computational complexity and is better ...
Li, Li   +3 more
core   +1 more source

Local functional principal component analysis

open access: yes, 2007
Covariance operators of random functions are crucial tools to study the way random elements concentrate over their support. The principal component analysis of a random function X is well-known from a theoretical viewpoint and extensively used in ...
Mas, André
core   +1 more source

Principal Component Analysis in ECG Signal Processing

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
This paper reviews the current status of principal component analysis in the area of ECG signal processing. The fundamentals of PCA are briefly described and the relationship between PCA and Karhunen-Loève transform is explained.
Roig José Millet   +4 more
doaj   +2 more sources

Automatic Image Alignment Using Principal Component Analysis

open access: yesIEEE Access, 2018
We present an automatic technique for image alignment using a principal component analysis (PCA) that broadly consists of two steps. The first step is the segmentation of the region of interest by thresholding.
Hafiz Zia Ur Rehman, Sungon Lee
doaj   +1 more source

Uncertainty-Aware Principal Component Analysis

open access: yes, 2019
We present a technique to perform dimensionality reduction on data that is subject to uncertainty. Our method is a generalization of traditional principal component analysis (PCA) to multivariate probability distributions.
Deussen, Oliver   +4 more
core   +1 more source

Home - About - Disclaimer - Privacy