getPermutations: Get random permutations of a set of elements

In SourceSet: A Graphical Model Approach to Identify Primary Genes in Perturbed Biological Pathways

Get random permutations of a set of elements

Description

The function arranges, in an optimized way, all the elements of a set into a selected number of different sequences (i.e., permutations). If the number of possible orderings is less than the required number, the function returns the collection of all possible permutations.

Usage

getPermutations(n, nperms)

Arguments

n	number of elements
nperms	number of required permutations

Value

The function returns:

• perms: a matrix with nperms rows and n columns, containing the sequence of the ordered elements

• all.perms.flag: 1 if the perms array contains the entire collection of permutations, 0 otherwise. In the first case, the number of rows of perms matrix may be less than the number of requested permutations

• nperms.act: the number of permutations returned

Examples

sub.perm<-getPermutations(10,100)
all.perm<-getPermutations(3,100)

SourceSet documentation built on Nov. 21, 2022, 5:06 p.m.