ass="va">tuner</span> <span class="op"><a href="https://magrittr.tidyverse.org/reference/pipe.html" class="external-link">%&gt;%</a></span> <span class="fu"><a href="reference/fit_tuner.html">fit_tuner</a></span><span class="op">(</span>x <span class="op">=</span> <span class="va">mnist_train</span><span class="op">$</span><span class="va">x</span>,</span>
<span>                    y <span class="op">=</span> <span class="va">mnist_train</span><span class="op">$</span><span class="va">y</span>,</span>
<span