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Shannon-Entropy

R script to calculate entropy and info gain

Uses the standard Shannon Entropy formula.

Shannon Entropy Formula

Allows you to specify which variable in a dataset is to be the parent node, and then calculates the entropy of all other variables WRT that parent node.

Installation

  • library(devtools)
  • devtools::install_github('scottroot/shannon-entropy')

Usage

  • library(shannon-entropy)
  • ig(root, df, ignore)

Arguments

  • root The parent root variable.

  • df Your dataset or dataframe.

  • ignore The variables or columns in your dataset that you don't want to include

Output

A dataframe with all the variables' entropy and information gain.