Results 1 to 10 of about 2,229,496 (344)
Principal components analysis of population admixture. [PDF]
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 +3 more sources
New Interpretation of Principal Components Analysis [PDF]
A new look on the principal component analysis has been presented. Firstly, a geometric interpretation of determination coefficient was shown.
Zenon Gniazdowski
doaj +3 more sources
Robust principal component analysis? [PDF]
This article is about a curious phenomenon. Suppose we have a data matrix, which is the superposition of a low-rank component and a sparse component. Can we recover each component individually? We prove that under some suitable assumptions, it is possible to recover both the low-rank and the sparse components exactly
Candès, Emmanuel J. +3 more
openaire +3 more sources
A practical introduction to EEG Time-Frequency Principal Components Analysis (TF-PCA) [PDF]
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]
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
Microglia Morphological Categorization in a Rat Model of Neuroinflammation by Hierarchical Cluster and Principal Components Analysis. [PDF]
It is known that microglia morphology and function are closely related, but only few studies have objectively described different morphological subtypes.
Fernández-Arjona MDM +4 more
europepmc +2 more sources
Introduction to Principal Components Analysis
Principal components analysis (PCA) is a powerful statistical tool that can help researchers analyze datasets with many highly related predictors. PCA is a data reduction technique— that is, it reduces a larger set of predictor variables to a smaller set with minimal loss of information.
Kristin L. Sainani
openaire +3 more sources
Principal components analysis in clinical studies. [PDF]
Zhang Z, Castelló A.
europepmc +2 more sources
A multi-dimensional functional principal components analysis of EEG data. [PDF]
Hasenstab K +6 more
europepmc +2 more sources
Modal Principal Component Analysis [PDF]
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

