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  1. From Wikipedia, the free encyclopedia In information theoryan entropy encodingis a lossless data compressionscheme that is independent of the specific characteristics of the medium. One of the main types of entropy coding creates and assigns a unique prefix-free codeto each unique symbolthat occurs in the input.

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    What is entropy coding?
    (December 2013) ( Learn how and when to remove this template message) In information theory, an entropy coding (or entropy encoding) is a lossless data compression scheme that is independent of the specific characteristics of the medium.

    Entropy coding - Wikipedia

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    How does entropy affect the distribution of information?
    Entropy (information theory) Conversely, rarer events provide more information when observed. Since observation of less probable events occurs more rarely, the net effect is that the entropy (thought of as average information) received from non-uniformly distributed data is always less than or equal to log2 (n).

    Entropy (information theory) - Wikipedia

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    What is b-ary entropy?
    Note: the b in "b-ary entropy" is the number of different symbols of the ideal alphabet used as a standard yardstick to measure source alphabets. In information theory, two symbols are necessary and sufficient for an alphabet to encode information.

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    What is the entropy rate of a string of B's?
    A source that always generates a long string of B's has an entropy of 0, since the next character will always be a 'B'. The entropy rate of a data source means the average number of bits per symbol needed to encode it. Shannon's experiments with human predictors show an information rate between 0.6...

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    Entropy coding - Wikipedia

    https://en.wikipedia.org/wiki/Entropy_coding

    In information theory, an entropy coding (or entropy encoding) is any lossless data compression method that attempts to approach the lower bound declared by Shannon's source coding theorem, which states that any lossless data compression method must have expected code length greater or equal to the … See more

    Entropy as a measure of similarity

    Besides using entropy coding as a way to compress digital data, an entropy encoder can also be used to measure the amount of similarity between streams of data and already existing classes of data. This is done by generating … See more

    External links

    • Information Theory, Inference, and Learning Algorithms, by David MacKay (2003), gives an introduction to Shannon theory and data compression, including the See more

    See also

    • Arithmetic coding
    • Asymmetric numeral systems (ANS)
    • Context-adaptive binary arithmetic coding (CABAC)
    • Huffman coding See more

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  4. Entropy (information theory) - Wikipedia

    https://en.wikipedia.org/wiki/Entropy_(information_theory)

    • Approximate entropy (ApEn)
    • Entropy (thermodynamics)
    • Cross entropy – is a measure of the average number of bits needed to identify an event from a set of possibilities between two probability distributions

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    • Entropy encoding - HandWiki

      https://handwiki.org/wiki/Entropy_encoding

      WebView source. In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium. One of the main …

    • 熵編碼法 - 维基百科，自由的百科全书

      https://zh.wikipedia.org/wiki/熵編碼法

      Web熵編碼法 是一种独立于介质的具体特征的进行 无损数据压缩 的方案。 一种主要类型的熵编码方式是对输入的每一个符号，创建并分配一个唯一的 前缀码 ，然后，通过将每个固定 …

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      • Entropy and Encoding - soonhahwang/Computation-Structures …

        https://github-wiki-see.page/.../Entropy-and-Encoding

        WebEntropy. Entropy is the measure of amount of information present in the system. Larger Entropy would mean more bits (information) are required to represent the system …

      • Entropy coding - Wikipedia @ WordDisk

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        WebIn information theory, an entropy coding (or entropy encoding) is a lossless data compression scheme that is independent of the specific characteristics of the medium. …

      • Wikizero - Entropy coding

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        WebIn information theory, an entropy coding (or entropy encoding) is any lossless data compression method that attempts to approach the lower bound declared by Shannon's …

      • Entropy coding - HandWiki

        https://handwiki.org/wiki/Entropy_coding

        WebIn information theory, an entropy coding (or entropy encoding) is a lossless data compression scheme that is independent of the specific characteristics of the medium. …

      • Entropy_encoding - chemeurope.com

        https://www.chemeurope.com/en/encyclopedia/Entropy_encoding.html

        WebBesides using entropy encoding as a way to compress (and losslessly recover) digital data, an entropy encoder can also be used to measure the amount of similarity between …

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