f tolerance values, any one of which being satisfied causes the algorithm to terminate with a solution. See the <a href="https://mc-stan.org/docs/reference-manual/optimization.html#bfgs-and-l-bfgs-configuration">BFGS and L-BFGS configuration section</a> for details on the convergence tests.</p>
<p>Both BFGS and L-BFGS have the following configuration arguments:</p>
<ul>
<li><p><code>init_alpha</code> - The initial step size parameter. Must be a positive real number. Default value is <span class="math inline