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<a href="hoeffding__categorical__split_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="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#ifndef MLPACK_METHODS_HOEFFDING_TREES_HOEFFDING_CATEGORICAL_SPLIT_HPP</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#define MLPACK_METHODS_HOEFFDING_TREES_HOEFFDING_CATEGORICAL_SPLIT_HPP</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</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="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="categorical__split__info_8hpp.html">categorical_split_info.hpp</a>&quot;</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">namespace </span>tree {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> FitnessFunction&gt;</div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html"> 44</a></span>&#160;<span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html">HoeffdingCategoricalSplit</a></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;{</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keyword">public</span>:</div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#aaaceda36c643ac16508f9048568f0368"> 48</a></span>&#160; <span class="keyword">typedef</span> <a class="code" href="classmlpack_1_1tree_1_1CategoricalSplitInfo.html">CategoricalSplitInfo</a> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#aaaceda36c643ac16508f9048568f0368">SplitInfo</a>;</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a730063dd72f998b8c2cd22634c688741">HoeffdingCategoricalSplit</a>(<span class="keyword">const</span> <span class="keywordtype">size_t</span> numCategories,</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> numClasses);</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a730063dd72f998b8c2cd22634c688741">HoeffdingCategoricalSplit</a>(<span class="keyword">const</span> <span class="keywordtype">size_t</span> numCategories,</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keyword">const</span> <span class="keywordtype">size_t</span> numClasses,</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">const</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html">HoeffdingCategoricalSplit</a>&amp; other);</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> eT&gt;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#af6805d9aaa9f19f1ed73ca3b295bae78">Train</a>(eT value, <span class="keyword">const</span> <span class="keywordtype">size_t</span> label);</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a8e83a6bd5de5bcec736942233dc5d27d">EvaluateFitnessFunction</a>(<span class="keywordtype">double</span>&amp; bestFitness, <span class="keywordtype">double</span>&amp; secondBestFitness)</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keyword">const</span>;</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae842f2c5aaa9580a8596c70d928095bf"> 93</a></span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae842f2c5aaa9580a8596c70d928095bf">NumChildren</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a032cf1957fc1cebc2472e741d8bf6f90">sufficientStatistics</a>.n_cols; }</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae9bb73f8f902d4d0ed6585454feff18c">Split</a>(arma::Col&lt;size_t&gt;&amp; childMajorities, SplitInfo&amp; splitInfo);</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a8bf75d6c120eadc57b1ee633076f6111">MajorityClass</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae8ac79b79aecc337360e1e401228254d">MajorityProbability</a>() <span class="keyword">const</span>;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; <span class="keyword">template</span>&lt;<span class="keyword">typename</span> Archive&gt;</div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ac0907313ec2125e70f87d110d6072d6e"> 111</a></span>&#160; <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ac0907313ec2125e70f87d110d6072d6e">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="l00112"></a><span class="lineno"> 112</span>&#160; {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; ar &amp; <a class="code" href="namespacemlpack_1_1data.html#a785ee98e0070286ef86eeeea85a74018">data::CreateNVP</a>(<a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a032cf1957fc1cebc2472e741d8bf6f90">sufficientStatistics</a>, <span class="stringliteral">&quot;sufficientStatistics&quot;</span>);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; }</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="keyword">private</span>:</div><div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a032cf1957fc1cebc2472e741d8bf6f90"> 120</a></span>&#160; arma::Mat&lt;size_t&gt; <a class="code" href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a032cf1957fc1cebc2472e741d8bf6f90">sufficientStatistics</a>;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;};</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;} <span class="comment">// namespace tree</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160;} <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;<span class="comment">// Include implementation.</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="preprocessor">#include &quot;hoeffding_categorical_split_impl.hpp&quot;</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_ac0907313ec2125e70f87d110d6072d6e"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ac0907313ec2125e70f87d110d6072d6e">mlpack::tree::HoeffdingCategoricalSplit::Serialize</a></div><div class="ttdeci">void Serialize(Archive &amp;ar, const unsigned int)</div><div class="ttdoc">Serialize the categorical split. </div><div class="ttdef"><b>Definition:</b> <a href="hoeffding__categorical__split_8hpp_source.html#l00111">hoeffding_categorical_split.hpp:111</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="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="namespacemlpack_1_1data_html_a785ee98e0070286ef86eeeea85a74018"><div class="ttname"><a href="namespacemlpack_1_1data.html#a785ee98e0070286ef86eeeea85a74018">mlpack::data::CreateNVP</a></div><div class="ttdeci">FirstShim&lt; T &gt; CreateNVP(T &amp;t, const std::string &amp;name, typename std::enable_if_t&lt; HasSerialize&lt; T &gt;::value &gt; *=0)</div><div class="ttdoc">Call this function to produce a name-value pair; this is similar to BOOST_SERIALIZATION_NVP(), but should be used for types that have a Serialize() function (or contain a type that has a Serialize() function) instead of a serialize() function. </div><div class="ttdef"><b>Definition:</b> <a href="serialization__shim_8hpp_source.html#l00094">serialization_shim.hpp:94</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_ae8ac79b79aecc337360e1e401228254d"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae8ac79b79aecc337360e1e401228254d">mlpack::tree::HoeffdingCategoricalSplit::MajorityProbability</a></div><div class="ttdeci">double MajorityProbability() const </div><div class="ttdoc">Get the probability of the majority class given the points seen so far. </div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_a730063dd72f998b8c2cd22634c688741"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a730063dd72f998b8c2cd22634c688741">mlpack::tree::HoeffdingCategoricalSplit::HoeffdingCategoricalSplit</a></div><div class="ttdeci">HoeffdingCategoricalSplit(const size_t numCategories, const size_t numClasses)</div><div class="ttdoc">Create the HoeffdingCategoricalSplit given a number of categories for this dimension and a number of ...</div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_a032cf1957fc1cebc2472e741d8bf6f90"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a032cf1957fc1cebc2472e741d8bf6f90">mlpack::tree::HoeffdingCategoricalSplit::sufficientStatistics</a></div><div class="ttdeci">arma::Mat&lt; size_t &gt; sufficientStatistics</div><div class="ttdoc">The sufficient statistics for all points seen so far. </div><div class="ttdef"><b>Definition:</b> <a href="hoeffding__categorical__split_8hpp_source.html#l00120">hoeffding_categorical_split.hpp:120</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_a8e83a6bd5de5bcec736942233dc5d27d"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a8e83a6bd5de5bcec736942233dc5d27d">mlpack::tree::HoeffdingCategoricalSplit::EvaluateFitnessFunction</a></div><div class="ttdeci">void EvaluateFitnessFunction(double &amp;bestFitness, double &amp;secondBestFitness) const </div><div class="ttdoc">Given the points seen so far, evaluate the fitness function, returning the gain for the best possible...</div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_ae842f2c5aaa9580a8596c70d928095bf"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae842f2c5aaa9580a8596c70d928095bf">mlpack::tree::HoeffdingCategoricalSplit::NumChildren</a></div><div class="ttdeci">size_t NumChildren() const </div><div class="ttdoc">Return the number of children, if the node were to split. </div><div class="ttdef"><b>Definition:</b> <a href="hoeffding__categorical__split_8hpp_source.html#l00093">hoeffding_categorical_split.hpp:93</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1CategoricalSplitInfo_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1CategoricalSplitInfo.html">mlpack::tree::CategoricalSplitInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="categorical__split__info_8hpp_source.html#l00020">categorical_split_info.hpp:20</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_ae9bb73f8f902d4d0ed6585454feff18c"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#ae9bb73f8f902d4d0ed6585454feff18c">mlpack::tree::HoeffdingCategoricalSplit::Split</a></div><div class="ttdeci">void Split(arma::Col&lt; size_t &gt; &amp;childMajorities, SplitInfo &amp;splitInfo)</div><div class="ttdoc">Gather the information for a split: get the labels of the child majorities, and initialize the SplitI...</div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_aaaceda36c643ac16508f9048568f0368"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#aaaceda36c643ac16508f9048568f0368">mlpack::tree::HoeffdingCategoricalSplit::SplitInfo</a></div><div class="ttdeci">CategoricalSplitInfo SplitInfo</div><div class="ttdoc">The type of split information required by the HoeffdingCategoricalSplit. </div><div class="ttdef"><b>Definition:</b> <a href="hoeffding__categorical__split_8hpp_source.html#l00048">hoeffding_categorical_split.hpp:48</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_a8bf75d6c120eadc57b1ee633076f6111"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#a8bf75d6c120eadc57b1ee633076f6111">mlpack::tree::HoeffdingCategoricalSplit::MajorityClass</a></div><div class="ttdeci">size_t MajorityClass() const </div><div class="ttdoc">Get the majority class seen so far. </div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html">mlpack::tree::HoeffdingCategoricalSplit</a></div><div class="ttdoc">This is the standard Hoeffding-bound categorical feature proposed in the paper below: ...</div><div class="ttdef"><b>Definition:</b> <a href="hoeffding__categorical__split_8hpp_source.html#l00044">hoeffding_categorical_split.hpp:44</a></div></div>
<div class="ttc" id="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit_html_af6805d9aaa9f19f1ed73ca3b295bae78"><div class="ttname"><a href="classmlpack_1_1tree_1_1HoeffdingCategoricalSplit.html#af6805d9aaa9f19f1ed73ca3b295bae78">mlpack::tree::HoeffdingCategoricalSplit::Train</a></div><div class="ttdeci">void Train(eT value, const size_t label)</div><div class="ttdoc">Train on the given value with the given label. </div></div>
<div class="ttc" id="categorical__split__info_8hpp_html"><div class="ttname"><a href="categorical__split__info_8hpp.html">categorical_split_info.hpp</a></div></div>
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