Data.Array.Accelerate.KullbackLiebler

Documentation

kullbackLiebler :: Floating e => Acc (Vector e) -> Acc (Vector e) -> Acc (Scalar e)

Assumes input is nonzero

entropy :: Floating e => Acc (Vector e) -> Acc (Scalar e)

Assumes input is nonzero

dropZeroes :: (Eq e, Num (Exp e)) => Acc (Vector e) -> Acc (Vector e)

scale :: Floating e => Acc (Vector e) -> Acc (Vector e)

Doesn't check for negative values

Since: 0.1.1.0

hellinger :: Floating e => Acc (Vector e) -> Acc (Vector e) -> Acc (Scalar e)

Hellinger distance

Since: 0.1.2.0

fDivergence

Arguments

:: Floating e

=> (Exp e -> Exp e)

\(f\)

-> Acc (Vector e)

-> Acc (Vector e)

-> Acc (Scalar e)

\( D_f(p \| q) = \displaystyle\int p(x) f\left(\frac{p(x)}{q(x)}\right) dx \)

Since: 0.1.2.0

alphaDivergence :: Floating e => Exp e -> Acc (Vector e) -> Acc (Vector e) -> Acc (Scalar e)

\( D^{(\alpha)}(p\| q) = \frac{4}{1 - \alpha^2}\left(1 - \displaystyle\int p(x)^{\frac{1-\alpha}{2}} q(x)^{\frac{1+\alpha}{2}} dx\right)\) for \( \alpha \neq \pm 1\)

Since: 0.1.2.0