ons on cross-covariances between training, test and
inducing points only.
</p>

<p>
Using the FITC approximation 
is very simple, we just have to wrap the covariance function
<tt>covfunc</tt> into <a href="../cov/covFITC.m">covFITC.m</a>
and call <a href="../gp.m">gp.m</a> with the inference methods
<a href="../inf/infFITC_Laplace.m">infFITC_Laplace.m</a> and
<a href="../inf/infFITC_EP.m">infFITC_EP.m</a>
as demonstrated by the following lines of code.
</p>

<pre>
  [u1,u2] = meshgrid(linspace(-2,2,5)); u =