mlbench: mlbench.simplex – R documentation

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mlbench.simplex

Corners of d-dimensional Simplex

Description

The created data are d-dimensional spherical Gaussians with standard deviation sd and means at the corners of a d-dimensional simplex. The number of classes is d+1.

Usage

mlbench.simplex(n = 800, d = 3, sides = 1, sd = 0.1, center=TRUE)
simplex(d, sides, center=TRUE)

Arguments

`n`	number of patterns to create
`d`	dimensionality of simplex, default is 3
`sides`	lengths of the sides of the simplex, default is to create a unit simplex
`sd`	standard deviation
`center`	If `TRUE`, the origin is the center of gravity of the simplex. If `FALSE`, the origin is a corner of the simplex and all coordinates of the simplex are positive.

Value

Returns an object of class "mlbench.simplex" with components

`x`	input values
`classes`	factor of length `n` with target classes

Author(s)

Manuel Eugster and Sebastian Kaiser

Examples

p <- mlbench.simplex()
plot(p)

library("lattice")
cloud(x.3~x.1+x.2, groups=classes, data=as.data.frame(p))

mlbench

Machine Learning Benchmark Problems

v2.1-3

GPL-2

Authors

Friedrich Leisch and Evgenia Dimitriadou.

Initial release

2021-01-21