Results 1 to 10 of about 536,911 (259)

A practical introduction to EEG Time-Frequency Principal Components Analysis (TF-PCA) [PDF]

open access: yesDevelopmental Cognitive Neuroscience, 2022
This EEG methods tutorial provides both a conceptual and practical introduction to a promising data reduction approach for time-frequency representations of EEG data: Time-Frequency Principal Components Analysis (TF-PCA).
George A. Buzzell   +3 more
doaj   +2 more sources

mbDenoise: microbiome data denoising using zero-inflated probabilistic principal components analysis [PDF]

open access: yesGenome Biology, 2022
The analysis of microbiome data has several technical challenges. In particular, count matrices contain a large proportion of zeros, some of which are biological, whereas others are technical.
Yanyan Zeng   +4 more
doaj   +2 more sources

Principal components analysis of population admixture. [PDF]

open access: yesPLoS ONE, 2012
With the availability of high-density genotype information, principal components analysis (PCA) is now routinely used to detect and quantify the genetic structure of populations in both population genetics and genetic epidemiology.
Jianzhong Ma, Christopher I Amos
doaj   +2 more sources

Modal Principal Component Analysis [PDF]

open access: yesNeural Computation, 2020
Principal component analysis (PCA) is a widely used method for data processing, such as for dimension reduction and visualization. Standard PCA is known to be sensitive to outliers, and various robust PCA methods have been proposed. It has been shown that the robustness of many statistical methods can be improved using mode estimation instead of mean ...
Sando, Keishi, Hino, Hideitsu
openaire   +3 more sources

The Modified Principal Component Analysis Feature Extraction Method for the Task of Diagnosing Chronic Lymphocytic Leukemia Type B-CLL [PDF]

open access: yesJournal of Universal Computer Science, 2020
The vast majority of medical problems are characterised by the relatively high spatial dimensionality of the task, which becomes problematic for many classic pattern recognition algorithms due to the well-known phenomenon of the curse of dimensionality ...
Mariusz Topolski
doaj   +3 more sources

Resonant quantum principal component analysis [PDF]

open access: yesScience Advances, 2021
An energy-tunable ancillary qubit efficiently probes the principal components of a low-rank matrix.
Zhaokai Li   +8 more
openaire   +3 more sources

A genealogical interpretation of principal components analysis. [PDF]

open access: yesPLoS Genetics, 2009
Principal components analysis, PCA, is a statistical method commonly used in population genetics to identify structure in the distribution of genetic variation across geographical location and ethnic background. However, while the method is often used to
Gil McVean
doaj   +1 more source

The classification of concentration of mixture of analytes

open access: yesLietuvos Matematikos Rinkinys, 2004
This paper presents a system which is used for the classification of biosensor signals. The proposed system is applied to the the synthesized and experimental data. The developed system showed good prediction perfomance.
Romas Baronas   +3 more
doaj   +3 more sources

Principal components analysis of employment in Eastern Europe [PDF]

open access: yesPanoeconomicus, 2006
For the last decade, the employment structure is one of the fastest changing areas of Eastern Europe. This paper explores the best methodology to compare the employment situations in the countries of this region.
Savić Mirko
doaj   +1 more source

Principal components analysis for mixtures with varying concentrations

open access: yesModern Stochastics: Theory and Applications, 2021
Principal Component Analysis (PCA) is a classical technique of dimension reduction for multivariate data. When the data are a mixture of subjects from different subpopulations one can be interested in PCA of some (or each) subpopulation separately.
Olena Sugakova, Rostyslav Maiboroda
doaj   +1 more source

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