Parameters
Preset distributions:
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H_α (Rényi)—
H_1 (Shannon)—
H_0 (Hartley)—
H_2 (Collision)—
H_∞ (Min-ent)—
Rényi entropy of order α:
H_α = 1/(1-α) · log₂(Σ pᵢᵅ)
α→1: Shannon entropy H = -Σpᵢlog₂pᵢ
α=0: log₂(support size)
α=2: collision entropy
α→∞: min-entropy -log₂(max pᵢ)
All orders satisfy H_α ≥ H_β for α≤β. Maximum is log₂(n) for uniform distribution.