imacode.github.io/aima-exercises/figures/restaurant-back-prop-figure.png">restaurant-back-prop-figure</a> has four hidden
nodes. This number was chosen somewhat arbitrarily. Use a
cross-validation method to find the best number of hidden nodes.
</p>
    </div>
</div>
<br>
<div class="card">
    <div class="card-header p-2">
        <a href="#" class="p-2">Community Solution</a>
                <a class="reqcomm" id="reqcommus" href="#">
                <button type="button" class="btn btn-dark float-right" 