Results 31 to 40 of about 1,020,025 (280)

Principal Component Analysis of Munich Functional Developmental Diagnosis

open access: yesPediatric Reports, 2021
Objectives: Munich Functional Developmental Diagnosis (MFDD) is a scale for assessing the psychomotor development of children in the first months or years of life.
Grażyna Pazera   +3 more
doaj   +1 more source

K-Nearest Neighbor Method with Principal Component Analysis for Functional Nonparametric Regression

open access: yesمجلة بغداد للعلوم, 2022
This paper proposed a new  method to study functional non-parametric regression data analysis with conditional expectation in the case that the covariates  are functional and the Principal Component Analysis was utilized to de-correlate the multivariate
Shelan Saied Ismaeel   +2 more
doaj   +1 more source

Prediction of Lithium-Ion Battery Capacity by Functional Principal Component Analysis of Monitoring Data

open access: yesApplied Sciences, 2022
The lithium-ion (Li-ion) battery is a promising energy storage technology for electronics, automobiles, and smart grids. Extensive research was conducted in the past to improve the prediction of the remaining capacity of the Li-ion battery.
MD Shoriat Ullah, Kangwon Seo
doaj   +1 more source

Machine-Learning-Based Functional Time Series Forecasting: Application to Age-Specific Mortality Rates

open access: yesForecasting, 2022
We propose a functional time series method to obtain accurate multi-step-ahead forecasts for age-specific mortality rates. The dynamic functional principal component analysis method is used to decompose the mortality curves into dynamic functional ...
Ufuk Beyaztas, Hanlin Shang
doaj   +1 more source

Functional classification of small towns in Germany. A methodological comparison

open access: yesRaumforschung und Raumordnung, 2020
The development of small towns in Germany in terms of their economic, demographic and social endowment is a subject area that has been rather neglected so far.
Philipp Gareis, Antonia Milbert
doaj   +1 more source

Spatial Autocorrelation of Global Stock Exchanges Using Functional Areal Spatial Principal Component Analysis

open access: yesMathematics, 2023
This work focuses on functional data presenting spatial dependence. The spatial autocorrelation of stock exchange returns for 71 stock exchanges from 69 countries was investigated using the functional Moran’s I statistic, classical principal component ...
Tzung Hsuen Khoo   +2 more
doaj   +1 more source

Application of Functional Principal Component Analysis in the Spatiotemporal Land-Use Regression Modeling of PM2.5

open access: yesAtmosphere, 2023
Functional data are generally curves indexed over a time domain, and land-use regression (LUR) is a promising spatial technique for generating high-resolution spatial estimation of retrospective long-term air pollutants.
Mahmood Taghavi   +6 more
doaj   +1 more source

Contagion Patterns Classification in Stock Indices: A Functional Clustering Analysis Using Decision Trees

open access: yesMathematics, 2023
This paper aims to identify the main determinants of the countries that present contagion during the period 2000–2021, based on the determination of the behavior patterns of 18 stock market indices of 15 of the main economies.
Jorge Omar Razo-De-Anda   +2 more
doaj   +1 more source

Wavelet Power Spectral Domain Functional Principal Component Analysis for Feature Extraction of Epileptic EEGs

open access: yesComputation, 2021
Feature extraction plays an important role in machine learning for signal processing, particularly for low-dimensional data visualization and predictive analytics.
Shengkun Xie
doaj   +1 more source

Multi-dimensional functional principal component analysis [PDF]

open access: yesStatistics and Computing, 2016
Functional principal component analysis is one of the most commonly employed approaches in functional and longitudinal data analysis and we extend it to analyze functional/longitudinal data observed on a general $d$-dimensional domain. The computational issues emerging in the extension are fully addressed with our proposed solutions.
Chen, Lu-Hung, Jiang, Ci-Ren
openaire   +2 more sources

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