Entropy coding

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Science and technology

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What Wikipedia says

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 an expected code length greater than or equal to the entropy of the source.

Excerpt from the Wikipedia article “Entropy coding”, under the CC BY-SA 4.0 license. Read the article on Wikipedia