Results 31 to 40 of about 2,186,647 (234)

Decomposable Principal Component Analysis

open access: yes, 2008
We consider principal component analysis (PCA) in decomposable Gaussian graphical models. We exploit the prior information in these models in order to distribute its computation.
Hero III, Alfred O., Wiesel, Ami
core   +1 more source

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

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

Euler Principal Component Analysis [PDF]

open access: yesInternational Journal of Computer Vision, 2012
Principal Component Analysis (PCA) is perhaps the most prominent learning tool for dimensionality reduction in pattern recognition and computer vision. However, the ℓ 2-norm employed by standard PCA is not robust to outliers. In this paper, we propose a kernel PCA method for fast and robust PCA, which we call Euler-PCA (e-PCA).
Stephan Liwicki   +3 more
openaire   +4 more sources

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

Principal Component Analysis In Radar Polarimetry [PDF]

open access: yesAdvances in Radio Science, 2005
Second order moments of multivariate (often Gaussian) joint probability density functions can be described by the covariance or normalised correlation matrices or by the Kennaugh matrix (Kronecker matrix).
A. Danklmayer, M. Chandra, E. Lüneburg
doaj  

Quantum principal component analysis [PDF]

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

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

Stable Analysis of Compressive Principal Component Pursuit

open access: yesAlgorithms, 2017
Compressive principal component pursuit (CPCP) recovers a target matrix that is a superposition of low-complexity structures from a small set of linear measurements. Pervious works mainly focus on the analysis of the existence and uniqueness.
Qingshan You, Qun Wan
doaj   +1 more source

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