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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. |

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 |

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 |