</a>00172   <span class="comment">// close the current model</span>
<a name="l00173"></a>00173   <span class="keyword">virtual</span> <span class="keywordtype">void</span> close() = 0;
<a name="l00174"></a>00174 
<a name="l00175"></a>00175   <span class="comment">// return parameter vector. the size should be dsize();</span>
<a name="l00176"></a>00176   <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">float</span> *weight_vector() <span class="keyword">const<