Results 31 to 40 of about 389,587 (260)

$e$PCA: High dimensional exponential family PCA

open access: yesThe Annals of Applied Statistics, 2018
Many applications, such as photon-limited imaging and genomics, involve large datasets with noisy entries from exponential family distributions. It is of interest to estimate the covariance structure and principal components of the noiseless distribution.
Liu, Lydia T.   +2 more
openaire   +4 more sources

Principal component analysis and its generalizations for any type of sequence (PCA-Seq)

open access: yesВавиловский журнал генетики и селекции, 2020
In the 1940s, Karhunen and Loève proposed a method for processing a one-dimensional numeric time series by converting it into multidimensional by shifts. In fact, a one-dimensional number series was decomposed into several orthogonal time series.
V. M. Efimov   +2 more
doaj   +1 more source

Profiling Metabolites through Chemometric Analysis in Orthosiphon aristatus Extracts as α-Glucosidase Inhibitory Activity and In Silico Molecular Docking

open access: yesIndonesian Journal of Chemistry, 2022
Orthosiphon aristatus (called kumis kucing in Indonesia) is a valuable herb for diabetes mellitus treatment. In this study, LC-MS/MS and PCA analyses were used to investigate the metabolite profile, classify O.
Faizal Maulana   +5 more
doaj   +1 more source

Gas chromatography-mass spectrometry in the taxonomy of Miscanthus

open access: yesВавиловский журнал генетики и селекции, 2020
Chemotaxonomy as a system approach deals with intra- and interspecific polymorphism of a group of taxa in order to clarify their taxonomic positions or to select material for selection or introduction.
N. M. Slynko   +9 more
doaj   +1 more source

Geometric PCA of Images

open access: yesSIAM Journal on Imaging Sciences, 2013
We describe a method for analyzing the shape variability of images, called geometric PCA. Our approach is based on the use of deformation operators to model the geometric variability of images around a reference mean pattern. This leads to a new algorithm for estimating shape variability.
Bigot, Jérémie   +2 more
openaire   +8 more sources

Usage of Principal Component Analysis in the Spatial Distribution of Mangrove Vegetation in North Coast of Pemalang

open access: yesJurnal Ilmu Kehutanan, 2017
Habitat factors greatly affect the composition of the mangrove ecosystem. Changes in habitat quality may result on a shift of the type of plant mangrove ecosystem composition.
Erny Poedjirahajoe   +2 more
doaj   +1 more source

Indeks aksesibilitas regional Jawa Tengah dan Daerah Istimewa Yogyakarta menggunakan principal component analysis dan kernel density analysis

open access: yesRegion: Jurnal Pembangunan Wilayah dan Perencanaan Partisipatif, 2021
Jawa Tengah dan Daerah Istimewa Yogyakarta merupakan dua provinsi yang memiliki keterkaitan tinggi. Studi-studi sebelumnya menerangkan bahwa keterkaitan itu utamanya adalah keterkaitan ekonomi.
Dwi Aditya Indra Lesmana   +1 more
doaj   +1 more source

DP-PCA: Statistically Optimal and Differentially Private PCA

open access: yesAdvances in Neural Information Processing Systems 35, 2022
We study the canonical statistical task of computing the principal component from $n$ i.i.d.~data in $d$ dimensions under $(\varepsilon,δ)$-differential privacy. Although extensively studied in literature, existing solutions fall short on two key aspects: ($i$) even for Gaussian data, existing private algorithms require the number of samples $n$ to ...
Xiyang Liu   +3 more
openaire   +3 more sources

Perceived self-efficacy on advance care planning in Latin America: ACP-SEs Latam validation

open access: yesFrontiers in Psychology
IntroductionAdvance Care Planning is a fundamental process in palliative and person-centered care, as it promotes clinical decisions that align with patients’ values and preferences.
Patricia Bonilla   +9 more
doaj   +1 more source

Total Flavonoid Content and Antioxidant Activity of Temu Mangga (Curcuma mangga Val. & Zijp) and its Classification with Chemometrics

open access: yesJournal of Food and Pharmaceutical Sciences, 2020
Indonesia is a rich country in terms of its biodiversity. Herbs that are widely used to maintain a healthy body comes from the Zingiberaceae family, including temu mangga. Temu mangga (Curcuma mangga Val.
Yuniar Intan Hartono   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy