Results 11 to 20 of about 415,661 (284)

Principal Component Analysis (PCA) unravels spectral components present in XPS spectra of complex oxide films on iron foil

open access: yesApplied Surface Science Advances, 2023
Principal component analysis (PCA), as applied to the processing of the complex X-ray photoelectron spectroscopy (XPS) lineshapes, is discussed. PCA analysis example is provided of complex native iron oxide films on Fe foil XPS spectra further modified ...
Neal Fairley   +3 more
doaj   +3 more sources

Sparse logistic principal components analysis for binary data [PDF]

open access: yes, 2010
We develop a new principal components analysis (PCA) type dimension reduction method for binary data. Different from the standard PCA which is defined on the observed data, the proposed PCA is defined on the logit transform of the success probabilities ...
Hu, Jianhua   +2 more
core   +3 more sources

Resultant equations for training load monitoring during a standard microcycle in sub-elite youth football: a principal components approach [PDF]

open access: yesPeerJ, 2023
Applying data-reduction techniques to extract meaningful information from electronic performance and tracking systems (EPTS) has become a hot topic in football training load (TL) monitoring.
José Eduardo Teixeira   +7 more
doaj   +2 more sources

Principal Component Analysis in an Asymmetric Norm [PDF]

open access: yes, 2014
Principal component analysis (PCA) is a widely used dimension reduction tool in the analysis of many kind of high-dimensional data. It is used in signal processing, mechanical engineering, psychometrics, and other fields under different names.
Haerdle, Wolfgang Karl   +2 more
core   +3 more sources

Data Restoration by Linear Estimation of the Principal Components From Lossy Data

open access: yesIEEE Access, 2020
In this article, we propose a method based on principal component analysis (PCA) to restore data after the occurrence of data loss due to sensor defects or environmental factors.
Yonggeol Lee, Sang-Il Choi
doaj   +1 more source

Principal Component Analysis (PCA)-Supported Underfrequency Load Shedding Algorithm [PDF]

open access: yesEnergies, 2020
This research represents a conceptual shift in the process of introducing flexibility into power system frequency stability-related protection. The existing underfrequency load shedding (UFLS) solution, although robust and fast, has often proved to be incapable of adjusting to different operating conditions.
Tadej Skrjanc   +2 more
openaire   +3 more sources

An automated procedure for detection and identification of ball bearing damage using multivariate statistics and pattern recognition [PDF]

open access: yes, 2010
This paper suggests an automated approach for fault detection and classification in roller bearings, which is based on pattern recognition and principal components analysis of the measured vibration signals.
Trendafilova, I.
core   +1 more source

Integrating Neutrosophic Logic into Principal Component Analysis: A Python-Based Framework [PDF]

open access: yesNeutrosophic Sets and Systems
Principal Component Analysis (PCA) is a widely used dimensionality reduction technique that transforms correlated variables into a smaller set of uncorrelated principal components. However, classical PCA assumes precise and crisp data, which may not hold
D. Vidhya, S. Jafari, G. Nordo
doaj   +1 more source

Application of PCA-LSTM algorithm for financial market stock return prediction and optimization model

open access: yesInternational Journal for Simulation and Multidisciplinary Design Optimization, 2023
Accurately predicting stock returns can help reduce market risk. This paper briefly introduced the long short-term memory (LSTM) algorithm model for predicting stock returns and combined it with principal component analysis (PCA) to improve the ...
Mi Yanxiang, Xu Donghai, Gao Tielin
doaj   +1 more source

Representing complex data using localized principal components with application to astronomical data [PDF]

open access: yes, 2007
Often the relation between the variables constituting a multivariate data space might be characterized by one or more of the terms: ``nonlinear'', ``branched'', ``disconnected'', ``bended'', ``curved'', ``heterogeneous'', or, more general, ``complex ...
A Gersho   +43 more
core   +1 more source

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