Description Usage Arguments Value See Also Examples
This function performs MAster Regulator INference Analysis
1 2 3 4 5 |
ges |
Vector containing the gene expression signature to analyze, or matrix with columns containing bootstraped signatures |
regulon |
Object of class regulon |
nullmodel |
Matrix of genes by permutations containing the NULL model signatures. A parametric approach equivalent to shuffle genes will be used if nullmodel is ommitted. |
pleiotropy |
Logical, whether correction for pleiotropic regulation should be performed |
minsize |
Number indicating the minimum allowed size for the regulons |
adaptive.size |
Logical, whether the weight (likelihood) should be used for computing the regulon size |
ges.filter |
Logical, whether the gene expression signature should be limited to the genes represented in the interactome |
synergy |
Number indicating the synergy computation mode: (0) for no synergy computation; (0-1) for establishing the p-value cutoff for individual TFs to be included in the synergy analysis; (>1) number of top TFs to be included in the synergy analysis |
level |
Integer, maximum level of combinatorial regulation |
pleiotropyArgs |
list of 5 numbers for the pleotropy correction indicating: regulators p-value threshold, pleiotropic interaction p-value threshold, minimum number of targets in the overlap between pleiotropic regulators, penalty for the pleiotropic interactions and the pleiotropy analysis method, either absolute or adaptive |
cores |
Integer indicating the number of cores to use (only 1 in Windows-based systems) |
verbose |
Logical, whether progression messages should be printed in the terminal |
A msviper object containing the following components:
The gene expression signature
The final regulon object used
Enrichment analysis results including regulon size, normalized enrichment score and p-value
msviper parameters, including minsize
, adaptive.size
1 2 3 4 5 | data(bcellViper, package="bcellViper")
sig <- rowTtest(dset, "description", c("CB", "CC"), "N")$statistic
dnull <- ttestNull(dset, "description", c("CB", "CC"), "N", per=100) # Only 100 permutations to reduce computation time, but it is recommended to perform at least 1000 permutations
mra <- msviper(sig, regulon, dnull)
plot(mra, cex=.7)
|
Loading required package: Biobase
Loading required package: BiocGenerics
Loading required package: parallel
Attaching package: ‘BiocGenerics’
The following objects are masked from ‘package:parallel’:
clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
clusterExport, clusterMap, parApply, parCapply, parLapply,
parLapplyLB, parRapply, parSapply, parSapplyLB
The following objects are masked from ‘package:stats’:
IQR, mad, sd, var, xtabs
The following objects are masked from ‘package:base’:
anyDuplicated, append, as.data.frame, basename, cbind, colnames,
dirname, do.call, duplicated, eval, evalq, Filter, Find, get, grep,
grepl, intersect, is.unsorted, lapply, Map, mapply, match, mget,
order, paste, pmax, pmax.int, pmin, pmin.int, Position, rank,
rbind, Reduce, rownames, sapply, setdiff, sort, table, tapply,
union, unique, unsplit, which.max, which.min
Welcome to Bioconductor
Vignettes contain introductory material; view with
'browseVignettes()'. To cite Bioconductor, see
'citation("Biobase")', and for packages 'citation("pkgname")'.
Thu Dec 3 02:27:25 2020
Computing the null model distribution by 100 permutations.
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Thu Dec 3 02:27:27 2020
Computing regulon enrichment with aREA algorithm
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Estimating the normalized enrichment scores
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