xpected to diverge from the model (i.e, the residual unexplained
variability model), and parameter values. The observation model type is
selected through the function name. The observed variable as well as the
parameters are specified as function arguments.</p><h3 class='hasAnchor' id='arguments'><a class='anchor' href='#arguments'></a>Specifying predictions</h3>


<p>The actual prediction from the model is the first argument of the
function. It can be specified in a number of different ways:</p><ul>
<li><p