\newcommand{\ELBO}[2]{\mathcal{J}(#1,#2)}
\newcommand{\R}{\mathcal{R}}
\newcommand{\ELBORTheta}{\ELBO{\R}{\pmb{\theta}}}
\newcommand{\Var}{\mathbb{V}}
\newcommand{\Esp}{\mathbb{E}}
\newcommand{\Prob}{\mathbb{P}}
\newcommand{\calL}{\mathcal{L}}