entropiumInformation theory for Rust

Shannon entropy, joint entropy, conditional entropy and mutual information — zero dependencies, ergonomic API.

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Zero dependencies

No production dependencies. Just Rust and the standard library.

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Works with any type that implements Eq + Hash — integers, strings, structs, tuples.

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Every function has a checked variant returning Result and an unchecked variant that panics, so you choose the tradeoff.

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Verified against known properties — H(X|X) = 0, I(X;Y) = H(X) for identical variables, H(X,Y) = 2 for independent fair bits.