|The Symbol Frequency Table Calculator|
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.
|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 Calculator|
Generate Shannon coding for a set of symbols based on their probabilities.
|Shannon-Fano coding calculator|
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
|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
This online calculator calculates joint entropy of two discrete random variables given a joint distribution table (X, Y) ~ p
|Information gain calculator|
This online calculator calculates information gain, the change in information entropy from a prior state to a state that takes some information as given
|Decision tree builder|
This online calculator builds a decision tree from a training set using the Information Gain metric