class="xref">objective_functions</code></a></td><td>
       <em></em></td></tr>
     <tr class="cg-4">
       <td></td>
       <td>&#160;&#160;&#160;
       <a href="objective_functions/objective_functions.html#module-objective_functions.cca"><code class="xref">objective_functions.cca</code></a></td><td>
       <em></em></td></tr>
     <tr class="cg-4">
       <td></td>
       <td>&#160;&#160;&#160;
       <a href="objective_functions/objective_functions.html#module-objective_functions.contrast"><code class