iv><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  std::vector&lt;int&gt; word_model_input_vector; <span class="comment">/* word feature to input into the model */</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  std::vector&lt;int&gt; model_output_vector; <span class="comment">/* output vector of the model */</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div><div class="line"><a name="l0