f
which are filled by row with the transformed values. For example, in
the <span class="math inline">\(4 \times 4\)</span> case, there are <span class="math inline">\(\binom{4}{2}\)</span> values arranged as</p>
<p><span class="math display">\[
z
=
\left[
\begin{array}{cccc}
0 &amp; \tanh y_1 &amp; \tanh y_2 &amp; \tanh y_4
\\
0 &amp; 0 &amp; \tanh y_3 &amp; \tanh y_5
\\
0 &amp; 0 &amp; 0 &amp; \tanh y_6
\\
0 &amp; 0 &amp; 0 &amp; 0
\end{array}
\right]
.
\]</span></p>
<p>Lewandowski, Kurowicka and Joe (LKJ)