<p>In <a href="https://github.com/mlpack/mlpack/pull/703#discussion_r68396702">src/mlpack/methods/edge_boxes/edge_boxes_main.cpp</a>:</p>
<pre style='color:#555'>&gt; +  fraction: fraction of features to use to train each tree
&gt; +  n_tree: number of trees in forest to train
&gt; +  n_class: number of classes (clusters) for binary splits
&gt; +  min_count: minimum number of data points to allow split
&gt; +  min_child: minimum number of data points allowed at child nodes
&gt; +  max_depth: maximum depth of tree
&gt; +  split: options include &#39;gini&#39;, &#39;entropy&#39; and &#39;twoing&#39;
&gt; +  discretize: optional function mapping structured to class labels
&gt; +
&gt; +  stride: stride at which to compute edges
&gt; +  sharpen: sharpening amount (can only decrease after training)
&gt; +  n_tree_eval: number of trees to evaluate per location
&gt; +  nms: if true apply non-maximum suppression to edges
&gt; +  */
&gt; +
&gt; +  FeatureParameters params = FeatureParameters();
</pre>
<p>Thanks for the update <g-emoji alias="+1" fallback-src="https://assets-cdn.github.com/images/icons/emoji/unicode/1f44d.png">👍</g-emoji> <br>
In c++, when you declare an object, it will call the default constructor, so you can just write(Maybe you already know this)</p>

<p><code>FeatureParameters params;</code></p>

<p>In theory, initialize the object by using constructor is better than using copy assignment, but compiler should be able to optimize it, so it is just a preference of taste now.</p>

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