poseticDataAnalysis (version 1.0.0)

LEBubleyDyer: Generator of linear extensions through the Bubley-Dyer procedure.

Description

Creates an object of S4 class LEBubleyDyer, needed to sample the linear extensions of a given poset according to the Bubley-Dyer procedure. Actually, this function does not sample the linear extensions, but just generates the object that will sample them by using function LEGet.

Usage

LEBubleyDyer(poset, seed = NULL)

Value

An object of class LEBubleyDyer.

Arguments

poset

An object of S4 class POSet representing the poset whose linear extensions are generated. Argument poset must be created by using any function contained in the package aimed at building object of S4 class POSet (e.g. POSet(), LinearPOSet(), ProductPOSet(), ...) .

seed

Positive integer to initialize the random linear extension generation.

Examples

el <- c("a", "b", "c", "d")

dom <- matrix(c(
  "a", "b",
  "c", "b",
  "b", "d"
), ncol = 2, byrow = TRUE)

pos <- POSet(elements = el, dom = dom)

LEgenBD <- LEBubleyDyer(pos)