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This relation defines @brief Shannon entropy H(X) in the source section “Shannon entropy H(X) = -Σ p(x) log p(x) · @brief Shannon entropy H(X)”. It specifies the displayed relationship between the named quantities or parameters. Its interpretation depends on the source’s stated variables and conditions; this record does not assign an unprovided physical or cognitive meaning to them.
Terms & definitions
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How it works
Read @brief Shannon entropy H(X) as the quantity being defined or updated by this relation.
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Assumptions & limits
This source expression was recovered from the pinned code revision. Its presence does not establish that the associated program was built, run, or scientifically validated.
Original context
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}
// ═══════════════════════════════════════════════════════════════════════════════
// II. INFORMATION THEORY
// ═══════════════════════════════════════════════════════════════════════════════
/**
* @brief Shannon entropy H(X) = -Σ p(x) log p(x)
*/
inline double shannon_entropy(const double* probs, size_t n) {
double h = 0.0;
for (size_t i = 0; i < n; ++i) {
if (probs[i] > 1e-10) {
h -= probs[i] * std::log2(probs[i]);
}
}
return h;
}Exact original notation
@brief Shannon entropy H(X) = -Σ p(x) log p(x)