Results 21 to 30 of about 17,164 (153)

Looking for Synergies in Healthy Upper Limb Motion: A Focus on the Wrist

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2023
Recent studies on human upper limb motion highlighted the benefit of dimensionality reduction techniques to extrapolate informative joint patterns.
F. Masiero   +5 more
doaj   +1 more source

Tracking the New Zealand English NEAR/SQUARE Merger Using Functional Principal Components Analysis

open access: yesInterspeech, 2019
Copyright © 2019 ISCA The focus of the study is the application of functional principal components analysis (FPCA) to a sound change in progress in which the SQUARE and NEAR falling diphthongs are merging in New Zealand English.
M. Gubian   +4 more
semanticscholar   +1 more source

Sociodemographic, Health and Lifestyle, Sampling, and Mental Health Determinants of 24-Hour Motor Activity Patterns: Observational Study

open access: yesJournal of Medical Internet Research, 2021
BackgroundAnalyzing actigraphy data using standard circadian parametric models and aggregated nonparametric indices may obscure temporal information that may be a hallmark of the circadian impairment in psychiatric disorders.
Difrancesco, Sonia   +9 more
doaj   +1 more source

Functional principal component analysis (FPCA) on remote sensing data and longitudinal studies

open access: yes, 2021
This dissertation consists of three main pieces of my Ph.D. dissertation, which shapes my research on multivariate functional data, change-point detection, asynchronous longitudinal data, and remote sensing data applications. The first project is motivated by NASA's first dedicated \ce{CO2} monitoring satellite, the Orbiting Carbon Observatory-2 (OCO-2)
openaire   +4 more sources

Integrating Data Transformation in Principal Components Analysis [PDF]

open access: yes, 2015
Principal component analysis (PCA) is a popular dimension-reduction method to reduce the complexity and obtain the informative aspects of high-dimensional datasets.
Hu, Jianhua   +2 more
core   +3 more sources

Functional Principal Components Analysis on the Exemple of the Achievements of Students in the Years 2009-2017

open access: yesEconometrics, 2019
The functional principal components analysis joins the advantages of the principal components analysis and provide analysis of dynamic data. The main difference in both methods is the type of data the PCA is based on multivariate data, whereas the FPCA ...
Mirosława Sztemberg-Lewandowska
semanticscholar   +1 more source

Functional factor analysis for periodic remote sensing data [PDF]

open access: yes, 2012
We present a new approach to factor rotation for functional data. This is achieved by rotating the functional principal components toward a predefined space of periodic functions designed to decompose the total variation into components that are nearly ...
Friedl, Mark   +3 more
core   +3 more sources

COVARIATE ADJUSTED FUNCTIONAL PRINCIPAL COMPONENTS ANALYSIS FOR LONGITUDINAL DATA [PDF]

open access: yes, 2010
Classical multivariate principal component analysis has been extended to functional data and termed functional principal component analysis (FPCA). Most existing FPCA approaches do not accommodate covariate information, and it is the goal of this paper
Ci-Ren Jiang, Jane-ling Wang
semanticscholar   +1 more source

Recognition and Characterization of Forest Plant Communities through Remote-Sensing NDVI Time Series

open access: yesDiversity, 2020
Phytosociology is a reference method to classify vegetation that relies on field data. Its classification in hierarchical vegetation units, from plant associations to class level, hierarchically reflects the floristic similarity between different sites ...
Simone Pesaresi   +2 more
doaj   +1 more source

On the prediction of stationary functional time series [PDF]

open access: yes, 2014
This paper addresses the prediction of stationary functional time series. Existing contributions to this problem have largely focused on the special case of first-order functional autoregressive processes because of their technical tractability and the ...
Aue, Alexander   +2 more
core   +3 more sources

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