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mixOmics (version 5.0-2)

Omics Data Integration Project

Description

The package provide statistical integrative techniques and variants to analyse highly dimensional data sets: regularized CCA and sparse PLS to unravel relationships between two heterogeneous data sets of size (nxp) and (nxq) where the p and q variables are measured on the same samples or individuals n. These data may come from high throughput technologies, such as omics data (e.g. transcriptomics, metabolomics or proteomics data) that require an integrative or joint analysis. However, mixOmics can also be applied to any other large data sets where p + q >> n. rCCA is a regularized version of CCA to deal with the large number of variables. sPLS allows variable selection in a one step procedure and two frameworks are proposed: regression and canonical analysis. Numerous graphical outputs are provided to help interpreting the results. Recent methodological developments include: sparse PLS-Discriminant Analysis, Independent Principal Component Analysis and multilevel analysis using variance decomposition of the data.

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Version

Install

install.packages('mixOmics')

Monthly Downloads

141

Version

5.0-2

License

GPL (>= 2)

Maintainer

Kim-Anh Cao

Last Published

August 10th, 2014

Functions in mixOmics (5.0-2)

s.match

Plot of Paired Coordinates
imgCor

Image Maps of Correlation Matrices between two Data Sets
image.estim.regul

Plot the cross-validation score.
mat.rank

Matrix Rank
predict

Predict Method for PLS, sPLS, PLS-DA or sPLS-DA
estim.regul

Estimate the parameters of regularization for Regularized CCA
linnerud

Linnerud Dataset
cim

Clustered Image Maps (CIMs) ("heat maps")
pheatmap.multilevel

Clustered heatmap
tune.multilevel

Tuning functions for multilevel analyses
internal-functions

Internal Functions
plot.rcc

Canonical Correlations Plot
plot3dVar

Plot of Variables in three dimensions
plotVar

Plot of Variables
pca

Principal Components Analysis
print

Print Methods for CCA, (s)PLS, PCA and Summary objects
prostate

Human Prostate Tumors Data
spls

Sparse Partial Least Squares (sPLS)
scatterutil

Graphical utility functions from ade4
spca

Sparse Principal Components Analysis
vip

Variable Importance in the Projection (VIP)
pls

Partial Least Squares (PLS) Regression
pcatune

Tune the number of principal components in PCA
plot3dIndiv

Plot of Individuals (Experimental Units) in three dimensions
liver.toxicity

Liver Toxicity Data
wrapper.sgcca

mixOmics wrapper for Sparse Generalised Canonical Correlation Analysis (sgcca)
vac18

Vaccine study Data
data.simu

Simulation study for multilevel analysis
plsda

Partial Least Squares Discriminate Analysis (PLS-DA).
image

Plot the cross-validation score.
sipca

Independent Principal Component Analysis
tune.pca

Tune the number of principal components in PCA
network

Relevance Network for (r)CCA and (s)PLS regression
nutrimouse

Nutrimouse Dataset
ipca

Independent Principal Component Analysis
multilevel

Multilevel analysis for repeated measurements (cross-over design)
jet.colors

Jet Colors Palette
tune.rcc

Estimate the parameters of regularization for Regularized CCA
plotIndiv

Plot of Individuals (Experimental Units)
summary

Summary Methods for CCA and PLS objects
breast.tumors

Human Breast Tumors Data
wrapper.rgcca

mixOmics wrapper for Regularised Generalised Canonical Correlation Analysis (rgcca)
perf

Compute evaluation criteria for PLS, sPLS, PLS-DA and sPLS-DA
srbct

Small version of the small round blue cell tumors of childhood data
nipals

Non-linear Iterative Partial Least Squares (NIPALS) algorithm
multidrug

Multidrug Resistence Data
nearZeroVar

Identification of zero- or near-zero variance predictors
select.var

Output of selected variables
plot.perf

Plot for model performance
yeast

Yeast metabolomic study
splsda

Sparse Partial Least Squares Discriminate Analysis (sPLS-DA)
rcc

Regularized Canonical Correlation Analysis