-2, 2]\)</span>. These values are on the unconstrained scale, so must be inverse transformed back to satisfy the constraints declared for parameters. Because zero is chosen to be a reasonable default initial value for most parameters, the interval around zero provides a fairly diffuse starting point. For instance, unconstrained variables are initialized randomly in <span class="math inline">\((-2, 2)\)</span>, variables constrained to be positive are initialized roughly in <span class="math inline">\((0.14,