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<div class="title">all_categorical_split.hpp</div> </div>
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<a href="all__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> </div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef MLPACK_METHODS_DECISION_TREE_ALL_CATEGORICAL_SPLIT_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define MLPACK_METHODS_DECISION_TREE_ALL_CATEGORICAL_SPLIT_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">namespace </span>tree {</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">template</span><<span class="keyword">typename</span> FitnessFunction></div><div class="line"><a name="l00023"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1AllCategoricalSplit.html"> 23</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit.html">AllCategoricalSplit</a></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> {</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="comment">// No extra info needed for split.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00028"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html"> 28</a></span>  <span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo</a> { };</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">template</span><<span class="keyword">typename</span> VecType></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#a00b0b8870942d4279f9286c98cd68030">SplitIfBetter</a>(</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> bestGain,</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> VecType& data,</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> numCategories,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">const</span> arma::Row<size_t>& labels,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> numClasses,</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> minimumLeafSize,</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  arma::Col<typename VecType::elem_type>& classProbabilities,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<typename VecType::elem_type></a>& aux);</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#a59104aa271998aa3b949e8ac8bb08491">NumChildren</a>(<span class="keyword">const</span> arma::Col<ElemType>& classProbabilities,</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<ElemType></a>& <span class="comment">/* aux */</span>);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#aaed8bb4f738102f16d4775ac4d8122c2">CalculateDirection</a>(</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">const</span> ElemType& point,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> arma::Col<ElemType>& classProbabilities,</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <a class="code" href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<ElemType></a>& <span class="comment">/* aux */</span>);</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> };</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> } <span class="comment">// namespace tree</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">// Include implementation.</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#include "all_categorical_split_impl.hpp"</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="ttc" id="classmlpack_1_1tree_1_1AllCategoricalSplit_html_a00b0b8870942d4279f9286c98cd68030"><div class="ttname"><a href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#a00b0b8870942d4279f9286c98cd68030">mlpack::tree::AllCategoricalSplit::SplitIfBetter</a></div><div class="ttdeci">static double SplitIfBetter(const double bestGain, const VecType &data, const size_t numCategories, const arma::Row< size_t > &labels, const size_t numClasses, const size_t minimumLeafSize, arma::Col< typename VecType::elem_type > &classProbabilities, AuxiliarySplitInfo< typename VecType::elem_type > &aux)</div><div class="ttdoc">Check if we can split a node. </div></div>
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<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>
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<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>
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<div class="ttc" id="classmlpack_1_1tree_1_1AllCategoricalSplit_html_a59104aa271998aa3b949e8ac8bb08491"><div class="ttname"><a href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#a59104aa271998aa3b949e8ac8bb08491">mlpack::tree::AllCategoricalSplit::NumChildren</a></div><div class="ttdeci">static size_t NumChildren(const arma::Col< ElemType > &classProbabilities, const AuxiliarySplitInfo< ElemType > &)</div><div class="ttdoc">Return the number of children in the split. </div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1AllCategoricalSplit_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1AllCategoricalSplit.html">mlpack::tree::AllCategoricalSplit</a></div><div class="ttdoc">The AllCategoricalSplit is a splitting function that will split categorical features into many childr...</div><div class="ttdef"><b>Definition:</b> <a href="all__categorical__split_8hpp_source.html#l00023">all_categorical_split.hpp:23</a></div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1AllCategoricalSplit_html_aaed8bb4f738102f16d4775ac4d8122c2"><div class="ttname"><a href="classmlpack_1_1tree_1_1AllCategoricalSplit.html#aaed8bb4f738102f16d4775ac4d8122c2">mlpack::tree::AllCategoricalSplit::CalculateDirection</a></div><div class="ttdeci">static size_t CalculateDirection(const ElemType &point, const arma::Col< ElemType > &classProbabilities, const AuxiliarySplitInfo< ElemType > &)</div><div class="ttdoc">Calculate the direction a point should percolate to. </div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1AllCategoricalSplit_1_1AuxiliarySplitInfo.html">mlpack::tree::AllCategoricalSplit::AuxiliarySplitInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="all__categorical__split_8hpp_source.html#l00028">all_categorical_split.hpp:28</a></div></div>
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