mlbench.spirals {mlbench}R Documentation

Two Spirals Benchmark Problem

Description

The inputs of the spirals problem are points on two entangled spirals. If sd>0, then Gaussian noise is added to each data point.

Usage

mlbench.spirals(n, cycles=1, sd=0)

Arguments

n number of patterns to create
cycles the number of cycles each spiral makes

Value

Returns an object of class "mlbench.spirals" with components
x input values
classes factor vector of length n with target classes

Examples

# 1 cycle each, no noise
p<-mlbench.spirals(300)
plot(p)
#
# 1.5 cycles each, with noise
p<-mlbench.spirals(300,1.5,0.05)
plot(p)

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