Computes the entropy between two variables

It calculates the entropy between two categorical variables using log2. This log2 is mentioned in most of the Claude Shannon bibliography. Input/target can be numeric or character.

entropy_2(input, target)

Arguments

input	numeric/character vector
target	numeric/character vector

Value

Entropy measured in bits

Examples

if (FALSE) {
# Measuring entropy between input and target variable
entropy_2(input=data_golf$outlook, target=data_golf$play_golf)
}