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Name
Symbol frequencies table
This online calculator builds symbol frequency table for a given message
Shannon Entropy
This online calculator computes Shannon entropy for a given event probability table and for a given message.
Huffman coding
This online calculator generates Huffman coding based on a set of symbols and their probabilities. A brief description of Huffman coding is below the calculator.
Wordpress plugin
With Planetcalc plugin for Wordpress you can easily insert any planetcalc calculator in your wordpress-based site or blog pages.
Hartley's formula
Hartley's formula to determine the amount of information contained in a message with length n.
Text compression using Huffman coding
This online calculator compresses entered text using Huffman coding. It also displays built Huffman codes for the reference.
Shannon coding
This online calculator generates Shannon coding based on a set of symbols and their probabilities
Shannon-Fano coding calculator
This online calculator generates Shannon-Fano coding based on a set of symbols and their probabilities
Conditional entropy
This online calculator calculates entropy of Y random variable conditioned on X random variable and X random variable conditioned on Y random variable given a joint distribution table (X, Y) ~ p
Specific Conditional Entropy
This online calculator calculates entropy of Y random variable conditioned on specific value of X random variable and X random variable conditioned on specific value of Y random variable given a joint distribution table (X, Y) ~ p
Joint Entropy
This online calculator calculates joint entropy of two discrete random variables given a joint distribution table (X, Y) ~ p
Decision tree builder
This online calculator builds a decision tree from a training set using the Information Gain metric
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