><td>: posterior average of parameter variance </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">p_postvar_mean</td><td>: posterior variance of parameter mean </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">f_postave_mean</td><td>: posterior average of function prediction mean </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">f_postave_var</td><td>: posterior average of function prediction variance </td></tr>
    <tr><td class="paramdir">[o