Two Spirals Benchmark Problem
Usage
mlbench.spirals(n, cycles=1, sd=0)
Arguments
n
|
number of patterns to create
|
cycles
|
the number of cycles each spiral makes
|
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.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)