iv>
<div id="QR-reparameterization.section" class="section level2">
<h2><span class="header-section-number">1.2</span> The QR Reparameterization</h2>
<p>In the previous example, the linear predictor can be written as <span class="math inline">\(\eta = x \beta\)</span>, where <span class="math inline">\(\eta\)</span> is a <span class="math inline">\(N\)</span>-vector of predictions, <span class="math inline">\(x\)</span> is a <span class="math inline">\(N \times K\)</span> matrix, and <span class="math inlin