Description Usage Arguments Value Author(s) References

View source: R/miscfunctions.R

A simple implementation of the Gini impurity index for classification and regression trees. Not meant to be called directly - included for demonstration purposes.

1 |

`x` |
Numeric vector of length n. |

`class` |
Class labels, length n. |

`splitpoint` |
Tentative split point. |

The Gini impurity index, given a certain split point, a vector of possible splits, and a vector of class labels. Lower values indicate more pure leaves.

Ron Wehrens

R. Wehrens. "Chemometrics with R - Multivariate Data Analysis in the Natural Sciences and Life Sciences". Springer, Heidelberg, 2011.

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