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mixOmics (version 5.0-1)

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

290

Version

5.0-1

License

GPL (>= 2)

Maintainer

Last Published

November 10th, 2013

Functions in mixOmics (5.0-1)

linnerud

Linnerud Dataset
network

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

Identification of zero- or near-zero variance predictors
plsda

Partial Least Squares Discriminate Analysis (PLS-DA).
estim.regul

Estimate the parameters of regularization for Regularized CCA
vac18

Vaccine study Data
cim

Clustered Image Maps (CIMs) ("heat maps")
scatterutil

Graphical utility functions from ade4
plot.valid

Validation Plot
plotIndiv

Plot of Individuals (Experimental Units)
multidrug

Multidrug Resistence Data
data.simu

Simulation study for multilevel analysis
prostate

Human Prostate Tumors Data
summary

Summary Methods for CCA and PLS objects
predict

Predict Method for PLS, sPLS, PLS-DA or sPLS-DA
jet.colors

Jet Colors Palette
pcatune

Tune the number of principal components in PCA
pls

Partial Least Squares (PLS) Regression
sipca

Independent Principal Component Analysis
plot3dIndiv

Plot of Individuals (Experimental Units) in three dimensions
ipca

Independent Principal Component Analysis
plot3dVar

Plot of Variables in three dimensions
nutrimouse

Nutrimouse Dataset
spls

Sparse Partial Least Squares (sPLS)
tune.multilevel

Tuning functions for multilevel analyses
print

Print Methods for CCA, (s)PLS, PCA and Summary objects
breast.tumors

Human Breast Tumors Data
pca

Principal Components Analysis
pheatmap.multilevel

Clustered heatmap
wrapper.rgcca

mixOmics wrapper for Regularised Generalised Canonical Correlation Analysis (rgcca)
liver.toxicity

Liver Toxicity Data
tune.pca

Tune the number of principal components in PCA
image

Plot the cross-validation score.
plot.rcc

Canonical Correlations Plot
nipals

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

Multilevel analysis for repeated measurements (cross-over design)
splsda

Sparse Partial Least Squares Discriminate Analysis (sPLS-DA)
mat.rank

Matrix Rank
vip

Variable Importance in the Projection (VIP)
spca

Sparse Principal Components Analysis
srbct

Small version of the small round blue cell tumors of childhood data
tune.rcc

Estimate the parameters of regularization for Regularized CCA
valid

Compute validation criterion for PLS, sPLS, PLS-DA and sPLS-DA
internal-functions

Internal Functions
imgCor

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

Plot the cross-validation score.
plotVar

Plot of Variables
wrapper.sgcca

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

Yeast metabolomic study
rcc

Regularized Canonical Correlation Analysis
select.var

Output of selected variables
s.match

Plot of Paired Coordinates