bayespy.inference.vmp.nodes.gaussian.GaussianDistribution.compute_phi_from_parents

GaussianDistribution.compute_phi_from_parents(u_mu_Lambda, mask=True)[source]

Compute the natural parameter vector given parent moments.

\boldsymbol{\phi} (\boldsymbol{\mu}, \mathbf{\Lambda})
&=
\left[ \begin{matrix}
  \mathbf{\Lambda} \boldsymbol{\mu} 
  \\
  - \frac{1}{2} \mathbf{\Lambda}
\end{matrix} \right]