funModeling (version 1.6.8)

entropy_2: Computes the entropy between two variables

Description

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.

Usage

entropy_2(input, target)

Arguments

input

numeric/character vector

target

numeric/character vector

Value

Entropy measured in bits

Examples

# NOT RUN {
# Measuring entropy between input and target variable
entropy_2(input=data_golf$outlook, target=data_golf$play_golf)
# }