span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/pkg/rBayesianOptimization/man/BayesianOptimization.html" class="external-link">BayesianOptimization</a></span><span class="op">(</span>FUN <span class="op">=</span> <span class="va">fastai_fit</span>, bounds <span class="op">=</span> <span class="va">search_bound_fastai</span>,</span>
<span>                                    init_points <span class="op">=</span> <span class="fl">2</span>, init_grid_dt <span class="op">=</span> <s