 log-linear
link function (Xu &amp; von Davier, 2008) or a logistic link function
(Formann, 1992). For class \(j\)
in group \(g\) employing a link function \(h\), it holds that
$$ h [ P( j| g) ] \propto \sum_w   r_{jw}  \delta_{gw} $$
where group-specific distributions are allowed. The values
\(r_{jw}\) are specified in the design matrix <code>delta.designmatrix</code>.</p>
<p>This model contains classical uni- and multidimensional latent trait models,
latent class analysis, located latent class analysis, c