fficients. For <code>irtmodel="noncomp"</code> it must be a
matrix, for <code>irtmodel="comp"</code> it is a vector.</p></dd>

  <dt>a.init</dt>
<dd><p>Initial \(a\) coefficients arranged in a matrix</p></dd>

  <dt>c.init</dt>
<dd><p>Initial \(c\) coefficients</p></dd>

  <dt>d.init</dt>
<dd><p>Initial \(d\) coefficients</p></dd>

<dt>mu.i.init</dt>
<dd><p>Initial \(d\) coefficients</p></dd>

<dt>Sigma.init</dt>
<dd><p>Initial covariance matrix \(\Sigma\)</p></dd>

<dt>b.lower</dt>
<dd><p>Lower bound for \