Results 41 to 50 of about 563,921 (264)

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

Principal components analysis and cyclostationarity

open access: yesJournal of Multivariate Analysis, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Boudou, Alain, Viguier-Pla, Sylvie
openaire   +3 more sources

Chemomertic Risk Assessment of Soil Pollution

open access: yesOpen Chemistry, 2019
In this study, an interpretation and modeling of the soil quality by monitoring data using an intelligent data analysis is presented. On an annual average, values of 12 soil surface chemical parameters as input variables were determined at 35 sampling ...
Nedyalkova Miroslava, Simeonov Vasil
doaj   +1 more source

A principal component analysis for trees

open access: yesThe Annals of Applied Statistics, 2009
The active field of Functional Data Analysis (about understanding the variation in a set of curves) has been recently extended to Object Oriented Data Analysis, which considers populations of more general objects. A particularly challenging extension of this set of ideas is to populations of tree-structured objects.
Aydın, Burcu   +4 more
openaire   +4 more sources

A New Feature Extraction Method Based on the Information Fusion of Entropy Matrix and Covariance Matrix and Its Application in Face Recognition

open access: yesEntropy, 2015
The classic principal components analysis (PCA), kernel PCA (KPCA) and linear discriminant analysis (LDA) feature extraction methods evaluate the importance of components according to their covariance contribution, not considering the entropy ...
Shunfang Wang, Ping Liu
doaj   +1 more source

ارزیابی ژنوتیپ‎های یولاف زراعی (Avena sativa L.) با استفاده از شاخص‎های تحمل خشکی [PDF]

open access: yesتنش های محیطی در علوم زراعی, 2016
یولاف به‌عنوان یکی از غلاتی که در اغلب نقاط دنیا کشت می‎گردد، دارای خواص غذایی و دارویی بسیاری است و این ظرفیت را دارد که در ایران نیز به‌طور اقتصادی کشت‌وکار شود، اما همانند بسیاری دیگر از محصولات زراعی تنش خشکی می‎تواند ازجمله موانع توسعه و تولید مطلوب
صحبت بهرامی نژاد   +2 more
doaj   +1 more source

Principal Components Analysis of EEG Signals for Epileptic Patient Identification

open access: yesComputation, 2021
According to the behavior of its neuronal connections, it is possible to determine if the brain suffers from abnormalities such as epilepsy. This disease produces seizures and alters the patient’s behavior and lifestyle.
Maria Camila Guerrero   +2 more
doaj   +1 more source

Generative Principal Component Analysis

open access: yesCoRR, 2022
ICLR 2022 paper + additional appendix on algorithm-independent lower bounds + corrected experimental results for the Fashion-MNIST ...
Zhaoqiang Liu   +4 more
openaire   +3 more sources

Recursive Principal Components Analysis Using Eigenvector Matrix Perturbation

open access: yesEURASIP Journal on Advances in Signal Processing, 2004
Principal components analysis is an important and well-studied subject in statistics and signal processing. The literature has an abundance of algorithms for solving this problem, where most of these algorithms could be grouped into one of the following ...
Deniz Erdogmus   +4 more
doaj   +1 more source

Composição química da precipitação úmida da região metropolitana de Porto Alegre, Brasil, 2005- 2007

open access: yesQuímica Nova, 2012
This work aims to quantify the wet precipitation the Metropolitan Area of Porto Alegre (MAPA), in southern Brazil, through the analysis of major ions (by ion chromatography) and metallic elements (ICP/AES).
Daniela Montanari Migliavacca   +2 more
doaj   +1 more source

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