prior beliefs on median time-to-event</span>
<span class="sd">        :type alpha_prior: float</span>
<span class="sd">        :param beta_prior: second parameter in beta distribution for prior beliefs on median time-to-event</span>
<span class="sd">        :type beta_prior: float</span>

<span class="sd">        &quot;&quot;&quot;</span>

        <span class="bp">self</span><span class="o">.</span><span class="n">alpha_prior</span> <span class="o">=</span> <span class="n">alpha_prior</span>
        <span c