be estimated</p></dd>

  <dt>irtmodel</dt>
<dd><p>The item response model. Options are the noncompensatory model (<code>"noncomp"</code>),
the compensatory model (<code>"comp"</code>) and
the partially compensatory model (<code>"partcomp"</code>).
See Details for more explanations.</p></dd>

  <dt>est.b</dt>
<dd><p>An integer matrix (if <code>irtmodel="noncomp"</code>) or integer vector
(if <code>irtmodel="comp"</code>) for \(b\) parameters to be estimated</p></dd>

  <dt>est.a</dt>
<dd><p>An integer matrix