bayespy.inference.vmp.nodes.gamma.GammaDistribution.compute_moments_and_cgf¶

GammaDistribution.compute_moments_and_cgf(phi, mask=True)[source]¶: Compute the moments and $g(\phi)$ .

$\overline{\mathbf{u}} (\boldsymbol{\phi}) &= \begin{bmatrix} - \frac{\phi_2} {\phi_1} \\ \psi(\phi_2) - \log(-\phi_1) \end{bmatrix} \\ g_{\boldsymbol{\phi}} (\boldsymbol{\phi}) &= TODO$