tions/matrices by implementing <code class="docutils literal"><span class="pre">__getitem__</span></code> and <code class="docutils literal"><span class="pre">__call__</span></code>.</p>
<p>Required for methods that only require access to parts
of the kernel matrix.</p>
<dl class="method">
<dt id="mklaren.kernel.kinterface.Kinterface.__call__">
<code class="descname">__call__</code><span class="sig-paren">(</span><em>x</em>, <em>y</em><span class="sig-paren">)</span><a class="headerlink" href="#mklaren.kern