The Symbol Frequency Table Calculator is a tool that takes in a text message and produces a table of the frequencies of each symbol (i.e., character) that appears in the message. The calculator can be customized to ignore spaces and/or case, allowing for a more accurate analysis of the message's symbol frequencies.

This online calculator computes Shannon entropy for a given event probability table and for a given message.

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.

This online calculator compresses entered text using Huffman coding. It also displays built Huffman codes for the reference.

Generate Shannon coding for a set of symbols based on their probabilities.

This online calculator generates Shannon-Fano coding based on a set of symbols and their probabilities

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

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

This online calculator calculates joint entropy of two discrete random variables given a joint distribution table (X, Y) ~ p

This online calculator calculates information gain, the change in information entropy from a prior state to a state that takes some information as given

This online calculator builds a decision tree from a training set using the Information Gain metric