Results 11 to 20 of about 26,129,289 (257)

Structural components in functional data. [PDF]

open access: yes, 2009
Analyzing functional data often leads to finding common factors, for which functional principal component analysis proves to be a useful tool to summarize and characterize the random variation in a function space.
Gasser, Theo   +2 more
core   +5 more sources

Population structure identification of Turkmen and Darehshori horses using PCA, DAPC, and SPC methods [PDF]

open access: yesمجله بیوتکنولوژی کشاورزی, 2022
ObjectiveConservation of the genetic diversity of indigenous animals is very important. For the sustainable use of genetic resources, it is necessary to first study the genetic structure of populations.
Ghazaleh Javanmard   +5 more
doaj   +1 more source

Investigation of Morphological Diversity and Evaluation of Tomato Lines Yield Using Multivariate Statistical Analysis [PDF]

open access: yesMajallah-i ̒Ulum-i Bāghbānī, 2022
Introduction  Tomato is a product with a wide range of genotypes with different yields and selection based on this trait and its components can accelerate the breeding programs of this plant.
S. Golcheshmeh   +3 more
doaj   +1 more source

FACIAL EXPRESSION RECOGNITION BASED ON PRINCIPAL COMPONENTS ANALYSIS [PDF]

open access: yesInternational Journal of Intelligent Computing and Information Sciences, 2016
Recognizing facial expression is one of the most effective applications of image processing and has obtained great attention in latest years. A recognition system for facial expression is a computer based application which detects an individual facial ...
A. Hewa, O. Nomir, A. Saleh
doaj   +1 more source

Identification of dietary patterns by principal component analysis in schoolchildren in the South of Brazil and associated factors [PDF]

open access: yesRevista Brasileira de Saúde Materno Infantil, 2020
Objectives: to identify dietary patterns (DP) and associated factors in first grade school-children in elementary schools in the South of Brazil. Methods: school-based cross-sectional study, with a non-probabilistic sample of 782 schoolchildren aged 6 ...
Gabriela Rodrigues Bratkowski   +3 more
doaj   +4 more sources

ANOVA bootstrapped principal components analysis for logistic regression

open access: yesCroatian Review of Economic, Business and Social Statistics, 2022
Principal components analysis (PCA) is often used as a dimensionality reduction technique. A small number of principal components is selected to be used in a classification or a regression model to boost accuracy.
Toleva Borislava
doaj   +1 more source

COPD phenotype description using principal components analysis

open access: yesRespiratory Research, 2009
Background Airway inflammation in COPD can be measured using biomarkers such as induced sputum and FeNO. This study set out to explore the heterogeneity of COPD using biomarkers of airway and systemic inflammation and pulmonary function by principal ...
Vestbo Jørgen   +5 more
doaj   +1 more source

Using Principal Components Analysis in Program Evaluation: Some Practical Considerations

open access: yesJournal of MultiDisciplinary Evaluation, 2006
Principal Components Analysis (PCA) is widely used by behavioral science researchers to assess the dimensional structure of data and for data reduction purposes.
J. Thomas Kellow
doaj   +1 more source

RSEI or MRSEI? Comment on Jia et al. Evaluation of Eco-Environmental Quality in Qaidam Basin Based on the Ecological Index (MRSEI) and GEE. Remote Sens. 2021, 13, 4543

open access: yesRemote Sensing, 2022
Recently, Jia et al. employed the index, modified remote sensing ecological index (MRSEI), to evaluate the ecological quality of the Qaidam Basin, China. The MRSEI made a modification to the previous remote sensing-based ecological index (RSEI), which is
Hanqiu Xu   +3 more
doaj   +1 more source

Principal Components Analysis Utility in the Livestock Field

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2016
Principal Component Analysis is a method factor - factor analysis - and is used to reduce data complexity by replacingmassive data sets by smaller sets.
Ancuta Simona Rotaru   +3 more
doaj   +1 more source

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