https://github.com/scottroot/shannon-entropy

R script to calculate entropy and info gain
https://github.com/scottroot/shannon-entropy

Last synced: 9 months ago
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R script to calculate entropy and info gain

• Host: GitHub
• URL: https://github.com/scottroot/shannon-entropy
• Owner: scottroot
• Created: 2020-03-23T17:20:28.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2020-03-24T16:07:05.000Z (about 6 years ago)
• Last Synced: 2025-09-13T00:08:56.034Z (9 months ago)
• Language: R
• Size: 47.9 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Shannon-Entropy

R script to calculate entropy and info gain

Uses the standard Shannon Entropy formula.

![Shannon Entropy Formula](https://wikimedia.org/api/rest_v1/media/math/render/svg/5e17bf0bf0de728a9cae59fe63d10b12410311ae)

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.