| 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. mlbench.1spiral creates a single spiral.
Usage
mlbench.spirals(n, cycles=1, sd=0)
mlbench.1spiral(n, cycles=1, sd=0)
Arguments
n |
number of patterns to create |
cycles |
the number of cycles each spiral makes |
sd |
standard deviation of data points around the spirals |
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)
[Package
mlbench version 1.1-0
Index]