mlbench.waveform {mlbench}

Waveform Database Generator

Description

The generated data set consists of 21 attributes with continuous values and a variable showing the 3 classes (33% for each of 3 classes). Each class is generated from a combination of 2 of 3 "base" waves.

Usage

  mlbench.waveform(n)

Arguments

n

number of patterns to create

Value

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

x

input values

classes

factor vector of length n with target classes

Source

The original C code for the waveform generator was taken from the UCI Repository of Machine Learning Databases (Blake & Merz 1998). The C code was modified to use R's random number generator by Friedrich Leisch, who also wrote the R interface.

References

Breiman, L. (1996). Bias, variance, and arcing classifiers. Tech. Rep. 460, Statistics Department, University of California, Berkeley, CA, USA.

Blake, C.L. & Merz, C.J. (1998). UCI Repository of Machine Learning Databases. Irvine, CA: University of California, Irvine, Department of Information and Computer Science. Formerly available from ‘⁠http://www.ics.uci.edu/~mlearn/MLRepository.html⁠’.

Examples

p <- mlbench.waveform(100)
plot(p)