<p>In <a href="https://github.com/mlpack/mlpack/pull/686#discussion_r66709979">src/mlpack/methods/ne/tasks.hpp</a>:</p>
<pre style='color:#555'>&gt; +          std::vector&lt;std::vector&lt;double&gt;&gt; inputs;
&gt; +          std::vector&lt;double&gt; input1 = {0, 0, 1};
&gt; +          std::vector&lt;double&gt; input2 = {0, 1, 1};
&gt; +          std::vector&lt;double&gt; input3 = {1, 0, 1};
&gt; +          std::vector&lt;double&gt; input4 = {1, 1, 1};
&gt; +          inputs.push_back(input1);
&gt; +          inputs.push_back(input2);
&gt; +          inputs.push_back(input3);
&gt; +          inputs.push_back(input4);
&gt; +
&gt; +          std::vector&lt;double&gt; outputs;
&gt; +          outputs.push_back(1);
&gt; +          outputs.push_back(0);
&gt; +          outputs.push_back(1);
&gt; +          outputs.push_back(0);
&gt; +
</pre>
<p><a href="https://github.com/zoq" class="user-mention">@zoq</a> Reasonable. I will revise it then.</p>

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