n class='no'>feature</span>, <span class='no'>target</span>, <span class='no'>len_target</span>, <span class='no'>pos_target</span>)</pre>

    <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
    <table class="ref-arguments">
    <colgroup><col class="name" /><col class="desc" /></colgroup>
    <tr>
      <th>feature</th>
      <td><p>feature vector.</p></td>
    </tr>
    <tr>
      <th>target</th>
      <td><p>target.</p></td>
    </tr>
    <tr>
      <th>len_ta