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<a href="decision__stump_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#ifndef MLPACK_METHODS_DECISION_STUMP_DECISION_STUMP_HPP</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#define MLPACK_METHODS_DECISION_STUMP_DECISION_STUMP_HPP</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>&gt;</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="namespacemlpack_1_1decision__stump.html"> 18</a></span>&#160;<span class="keyword">namespace </span>decision_stump {</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> MatType = arma::mat&gt;</div><div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html"> 34</a></span>&#160;<span class="keyword">class </span><a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html">DecisionStump</a></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;{</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aa8aded56fb62e2272ec8ee0193ad3a7d">DecisionStump</a>(<span class="keyword">const</span> MatType&amp; data,</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a12067df40b150eb1106a5181554c5e5e">classes</a>,</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac6d1a84c7b7e4058307648578d6662f3">bucketSize</a> = 10);</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aa8aded56fb62e2272ec8ee0193ad3a7d">DecisionStump</a>(<span class="keyword">const</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html">DecisionStump&lt;&gt;</a>&amp; other,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keyword">const</span> MatType&amp; data,</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keyword">const</span> arma::rowvec&amp; weights);</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aa8aded56fb62e2272ec8ee0193ad3a7d">DecisionStump</a>();</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a27a2c93e3492f112e1e820efa4ff4623">Train</a>(<span class="keyword">const</span> MatType&amp; data,</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> classes,</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac6d1a84c7b7e4058307648578d6662f3">bucketSize</a>);</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a27a2c93e3492f112e1e820efa4ff4623">Train</a>(<span class="keyword">const</span> MatType&amp; data,</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keyword">const</span> arma::rowvec&amp; weights,</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> classes,</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> bucketSize);</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a487c14f8bf590e8804466018bf583938">Classify</a>(<span class="keyword">const</span> MatType&amp; test, arma::Row&lt;size_t&gt;&amp; predictedLabels);</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div><div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a22c2f20d02636d83d5ab5faa12f442f2"> 117</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a22c2f20d02636d83d5ab5faa12f442f2">SplitDimension</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a8cf3e07273acc240e40f017ee5159dc1">splitDimension</a>; }</div><div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a9d845822c6d006074fba8ddcceb21c7a"> 119</a></span>&#160; <span class="keywordtype">size_t</span>&amp; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a9d845822c6d006074fba8ddcceb21c7a">SplitDimension</a>() { <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a8cf3e07273acc240e40f017ee5159dc1">splitDimension</a>; }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;</div><div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2480c235fd94c1c2d5f62483ffaffa5c"> 122</a></span>&#160; <span class="keyword">const</span> arma::vec&amp; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2480c235fd94c1c2d5f62483ffaffa5c">Split</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2b06f53397b241918f0e23a2a7c3bbce">split</a>; }</div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0428ba9a9720eb134f9d0329c36b9537"> 124</a></span>&#160; arma::vec&amp; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0428ba9a9720eb134f9d0329c36b9537">Split</a>() { <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2b06f53397b241918f0e23a2a7c3bbce">split</a>; }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;</div><div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a6cc7931cae8b4a40b872ffcdeba8bad9"> 127</a></span>&#160; <span class="keyword">const</span> arma::Col&lt;size_t&gt; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a6cc7931cae8b4a40b872ffcdeba8bad9">BinLabels</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac56f4fc99d6f679857a0c01373613917">binLabels</a>; }</div><div class="line"><a name="l00129"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0f9269d1536f733d70d4dc68a5d6d9a1"> 129</a></span>&#160; arma::Col&lt;size_t&gt;&amp; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0f9269d1536f733d70d4dc68a5d6d9a1">BinLabels</a>() { <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac56f4fc99d6f679857a0c01373613917">binLabels</a>; }</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Archive&gt;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#acc2b60d287fc25f696178780e42761b9">Serialize</a>(Archive&amp; ar, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/* version */</span>);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a12067df40b150eb1106a5181554c5e5e"> 137</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a12067df40b150eb1106a5181554c5e5e">classes</a>;</div><div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac6d1a84c7b7e4058307648578d6662f3"> 139</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac6d1a84c7b7e4058307648578d6662f3">bucketSize</a>;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a8cf3e07273acc240e40f017ee5159dc1"> 142</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a8cf3e07273acc240e40f017ee5159dc1">splitDimension</a>;</div><div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2b06f53397b241918f0e23a2a7c3bbce"> 144</a></span>&#160; arma::vec <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2b06f53397b241918f0e23a2a7c3bbce">split</a>;</div><div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac56f4fc99d6f679857a0c01373613917"> 146</a></span>&#160; arma::Col&lt;size_t&gt; <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac56f4fc99d6f679857a0c01373613917">binLabels</a>;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keyword">template</span>&lt;<span class="keywordtype">bool</span> UseWeights, <span class="keyword">typename</span> VecType&gt;</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a6f0648887f46a0b916927f9dbecccc6a">SetupSplitDimension</a>(<span class="keyword">const</span> VecType&amp; dimension,</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; <span class="keyword">const</span> arma::rowvec&amp; weightD);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> VecType&gt;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a88a827b157f089c67e1f51c5cf16494e">TrainOnDim</a>(<span class="keyword">const</span> VecType&amp; dimension,</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels);</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a54866a31124123b5df89197c377ab1d1">MergeRanges</a>();</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> VecType&gt;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a11f0b8560e6b5671c3e21215108980e5">CountMostFreq</a>(<span class="keyword">const</span> VecType&amp; subCols);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> VecType&gt;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <span class="keywordtype">int</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a4d7c68e9e31cc52465b679237969cba6">IsDistinct</a>(<span class="keyword">const</span> VecType&amp; featureRow);</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keyword">template</span>&lt;<span class="keywordtype">bool</span> UseWeights, <span class="keyword">typename</span> VecType, <span class="keyword">typename</span> WeightVecType&gt;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aace55730a18bb05a03dfd915ce5ce431">CalculateEntropy</a>(<span class="keyword">const</span> VecType&amp; labels,</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="keyword">const</span> WeightVecType&amp; weights);</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keyword">template</span>&lt;<span class="keywordtype">bool</span> UseWeights&gt;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a27a2c93e3492f112e1e820efa4ff4623">Train</a>(<span class="keyword">const</span> MatType&amp; data,</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; <span class="keyword">const</span> arma::Row&lt;size_t&gt;&amp; labels,</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; <span class="keyword">const</span> arma::rowvec&amp; weights);</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;};</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160;} <span class="comment">// namespace decision_stump</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160;} <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160;</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160;<span class="preprocessor">#include &quot;decision_stump_impl.hpp&quot;</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a54866a31124123b5df89197c377ab1d1"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a54866a31124123b5df89197c377ab1d1">mlpack::decision_stump::DecisionStump::MergeRanges</a></div><div class="ttdeci">void MergeRanges()</div><div class="ttdoc">After the &quot;split&quot; matrix has been set up, merge ranges with identical class labels. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a487c14f8bf590e8804466018bf583938"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a487c14f8bf590e8804466018bf583938">mlpack::decision_stump::DecisionStump::Classify</a></div><div class="ttdeci">void Classify(const MatType &amp;test, arma::Row&lt; size_t &gt; &amp;predictedLabels)</div><div class="ttdoc">Classification function. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a8cf3e07273acc240e40f017ee5159dc1"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a8cf3e07273acc240e40f017ee5159dc1">mlpack::decision_stump::DecisionStump::splitDimension</a></div><div class="ttdeci">size_t splitDimension</div><div class="ttdoc">Stores the value of the dimension on which to split. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00142">decision_stump.hpp:142</a></div></div>
<div class="ttc" id="namespacemlpack_html"><div class="ttname"><a href="namespacemlpack.html">mlpack</a></div><div class="ttdoc">Linear algebra utility functions, generally performed on matrices or vectors. </div><div class="ttdef"><b>Definition:</b> <a href="binarize_8hpp_source.html#l00018">binarize.hpp:18</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a0f9269d1536f733d70d4dc68a5d6d9a1"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0f9269d1536f733d70d4dc68a5d6d9a1">mlpack::decision_stump::DecisionStump::BinLabels</a></div><div class="ttdeci">arma::Col&lt; size_t &gt; &amp; BinLabels()</div><div class="ttdoc">Modify the labels for each split bin (be careful!). </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00129">decision_stump.hpp:129</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a22c2f20d02636d83d5ab5faa12f442f2"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a22c2f20d02636d83d5ab5faa12f442f2">mlpack::decision_stump::DecisionStump::SplitDimension</a></div><div class="ttdeci">size_t SplitDimension() const </div><div class="ttdoc">Access the splitting dimension. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00117">decision_stump.hpp:117</a></div></div>
<div class="ttc" id="prereqs_8hpp_html"><div class="ttname"><a href="prereqs_8hpp.html">prereqs.hpp</a></div><div class="ttdoc">The core includes that mlpack expects; standard C++ includes and Armadillo. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a4d7c68e9e31cc52465b679237969cba6"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a4d7c68e9e31cc52465b679237969cba6">mlpack::decision_stump::DecisionStump::IsDistinct</a></div><div class="ttdeci">int IsDistinct(const VecType &amp;featureRow)</div><div class="ttdoc">Returns 1 if all the values of featureRow are not same. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html">mlpack::decision_stump::DecisionStump</a></div><div class="ttdoc">This class implements a decision stump. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00034">decision_stump.hpp:34</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a6f0648887f46a0b916927f9dbecccc6a"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a6f0648887f46a0b916927f9dbecccc6a">mlpack::decision_stump::DecisionStump::SetupSplitDimension</a></div><div class="ttdeci">double SetupSplitDimension(const VecType &amp;dimension, const arma::Row&lt; size_t &gt; &amp;labels, const arma::rowvec &amp;weightD)</div><div class="ttdoc">Sets up dimension as if it were splitting on it and finds entropy when splitting on dimension...</div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_aa8aded56fb62e2272ec8ee0193ad3a7d"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aa8aded56fb62e2272ec8ee0193ad3a7d">mlpack::decision_stump::DecisionStump::DecisionStump</a></div><div class="ttdeci">DecisionStump()</div><div class="ttdoc">Create a decision stump without training. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a2480c235fd94c1c2d5f62483ffaffa5c"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2480c235fd94c1c2d5f62483ffaffa5c">mlpack::decision_stump::DecisionStump::Split</a></div><div class="ttdeci">const arma::vec &amp; Split() const </div><div class="ttdoc">Access the splitting values. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00122">decision_stump.hpp:122</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a27a2c93e3492f112e1e820efa4ff4623"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a27a2c93e3492f112e1e820efa4ff4623">mlpack::decision_stump::DecisionStump::Train</a></div><div class="ttdeci">void Train(const MatType &amp;data, const arma::Row&lt; size_t &gt; &amp;labels, const size_t classes, const size_t bucketSize)</div><div class="ttdoc">Train the decision stump on the given data. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_ac56f4fc99d6f679857a0c01373613917"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac56f4fc99d6f679857a0c01373613917">mlpack::decision_stump::DecisionStump::binLabels</a></div><div class="ttdeci">arma::Col&lt; size_t &gt; binLabels</div><div class="ttdoc">Stores the labels for each splitting bin. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00146">decision_stump.hpp:146</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_acc2b60d287fc25f696178780e42761b9"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#acc2b60d287fc25f696178780e42761b9">mlpack::decision_stump::DecisionStump::Serialize</a></div><div class="ttdeci">void Serialize(Archive &amp;ar, const unsigned int)</div><div class="ttdoc">Serialize the decision stump. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_ac6d1a84c7b7e4058307648578d6662f3"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#ac6d1a84c7b7e4058307648578d6662f3">mlpack::decision_stump::DecisionStump::bucketSize</a></div><div class="ttdeci">size_t bucketSize</div><div class="ttdoc">The minimum number of points in a bucket. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00139">decision_stump.hpp:139</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_aace55730a18bb05a03dfd915ce5ce431"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#aace55730a18bb05a03dfd915ce5ce431">mlpack::decision_stump::DecisionStump::CalculateEntropy</a></div><div class="ttdeci">double CalculateEntropy(const VecType &amp;labels, const WeightVecType &amp;weights)</div><div class="ttdoc">Calculate the entropy of the given dimension. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a0428ba9a9720eb134f9d0329c36b9537"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a0428ba9a9720eb134f9d0329c36b9537">mlpack::decision_stump::DecisionStump::Split</a></div><div class="ttdeci">arma::vec &amp; Split()</div><div class="ttdoc">Modify the splitting values (be careful!). </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00124">decision_stump.hpp:124</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a88a827b157f089c67e1f51c5cf16494e"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a88a827b157f089c67e1f51c5cf16494e">mlpack::decision_stump::DecisionStump::TrainOnDim</a></div><div class="ttdeci">void TrainOnDim(const VecType &amp;dimension, const arma::Row&lt; size_t &gt; &amp;labels)</div><div class="ttdoc">After having decided the dimension on which to split, train on that dimension. </div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a9d845822c6d006074fba8ddcceb21c7a"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a9d845822c6d006074fba8ddcceb21c7a">mlpack::decision_stump::DecisionStump::SplitDimension</a></div><div class="ttdeci">size_t &amp; SplitDimension()</div><div class="ttdoc">Modify the splitting dimension (be careful!). </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00119">decision_stump.hpp:119</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a2b06f53397b241918f0e23a2a7c3bbce"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a2b06f53397b241918f0e23a2a7c3bbce">mlpack::decision_stump::DecisionStump::split</a></div><div class="ttdeci">arma::vec split</div><div class="ttdoc">Stores the splitting values after training. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00144">decision_stump.hpp:144</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a6cc7931cae8b4a40b872ffcdeba8bad9"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a6cc7931cae8b4a40b872ffcdeba8bad9">mlpack::decision_stump::DecisionStump::BinLabels</a></div><div class="ttdeci">const arma::Col&lt; size_t &gt; BinLabels() const </div><div class="ttdoc">Access the labels for each split bin. </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00127">decision_stump.hpp:127</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a12067df40b150eb1106a5181554c5e5e"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a12067df40b150eb1106a5181554c5e5e">mlpack::decision_stump::DecisionStump::classes</a></div><div class="ttdeci">size_t classes</div><div class="ttdoc">The number of classes (we must store this for boosting). </div><div class="ttdef"><b>Definition:</b> <a href="decision__stump_8hpp_source.html#l00137">decision_stump.hpp:137</a></div></div>
<div class="ttc" id="classmlpack_1_1decision__stump_1_1DecisionStump_html_a11f0b8560e6b5671c3e21215108980e5"><div class="ttname"><a href="classmlpack_1_1decision__stump_1_1DecisionStump.html#a11f0b8560e6b5671c3e21215108980e5">mlpack::decision_stump::DecisionStump::CountMostFreq</a></div><div class="ttdeci">double CountMostFreq(const VecType &amp;subCols)</div><div class="ttdoc">Count the most frequently occurring element in subCols. </div></div>
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