<td><p>Function which creates a <code>tfd$Distribution</code> instance representing the surrogate
posterior of the <code>bias</code> parameter. Default value:  <code>default_mean_field_normal_fn(is_singular = TRUE)</code> (which creates an
instance of <code>tfd_deterministic</code>).</p></td>
    </tr>
    <tr>
      <th>bias_posterior_tensor_fn</th>
      <td><p>Function which takes a <code>tfd$Distribution</code> instance and returns a representative
value. Default value: <code>function(d) d %&gt;% tfd_sa