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<div class="title">midpoint_split.hpp</div> </div>
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<a href="midpoint__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="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#ifndef MLPACK_CORE_TREE_BINARY_SPACE_TREE_MIDPOINT_SPLIT_HPP</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#define MLPACK_CORE_TREE_BINARY_SPACE_TREE_MIDPOINT_SPLIT_HPP</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <<a class="code" href="perform__split_8hpp.html">mlpack/core/tree/perform_split.hpp</a>></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>tree {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">template</span><<span class="keyword">typename</span> BoundType, <span class="keyword">typename</span> MatType = arma::mat></div><div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1MidpointSplit.html"> 30</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1MidpointSplit.html">MidpointSplit</a></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> {</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html"> 34</a></span>  <span class="keyword">struct </span><a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">SplitInfo</a></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  {</div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#af0cef441de07f5400234f638a5640842"> 37</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#af0cef441de07f5400234f638a5640842">splitDimension</a>;</div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#a6ad65dc505cb0b48a3057ffbe911e912"> 39</a></span>  <span class="keywordtype">double</span> <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#a6ad65dc505cb0b48a3057ffbe911e912">splitVal</a>;</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  };</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="classmlpack_1_1tree_1_1MidpointSplit.html#a95eff4025f6fef17cb5832472e006bbd">SplitNode</a>(<span class="keyword">const</span> BoundType& bound,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  MatType& data,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> begin,</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> count,</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">SplitInfo</a>& splitInfo);</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1MidpointSplit.html#a66f6747fa959b473f7c0921b756080dc"> 73</a></span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1MidpointSplit.html#a66f6747fa959b473f7c0921b756080dc">PerformSplit</a>(MatType& data,</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> begin,</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> count,</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">SplitInfo</a>& splitInfo)</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> split::PerformSplit<MatType, MidpointSplit>(data, begin, count,</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  splitInfo);</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1MidpointSplit.html#a9e35881dc80212dd155f620e45a77be3"> 98</a></span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1MidpointSplit.html#a9e35881dc80212dd155f620e45a77be3">PerformSplit</a>(MatType& data,</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> begin,</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> count,</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">const</span> <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">SplitInfo</a>& splitInfo,</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  std::vector<size_t>& oldFromNew)</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> split::PerformSplit<MatType, MidpointSplit>(data, begin, count,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  splitInfo, oldFromNew);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  }</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">template</span><<span class="keyword">typename</span> VecType></div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1MidpointSplit.html#a4ee14de7e93943843c7b95c807e1e699"> 115</a></span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> <a class="code" href="classmlpack_1_1tree_1_1MidpointSplit.html#a4ee14de7e93943843c7b95c807e1e699">AssignToLeftNode</a>(<span class="keyword">const</span> VecType& point,</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> <a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">SplitInfo</a>& splitInfo)</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  {</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> point[splitInfo.<a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#af0cef441de07f5400234f638a5640842">splitDimension</a>] < splitInfo.<a class="code" href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#a6ad65dc505cb0b48a3057ffbe911e912">splitVal</a>;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> };</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> } <span class="comment">// namespace tree</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">// Include implementation.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#include "midpoint_split_impl.hpp"</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#endif</span></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>
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<div class="ttc" id="classmlpack_1_1tree_1_1MidpointSplit_html_a95eff4025f6fef17cb5832472e006bbd"><div class="ttname"><a href="classmlpack_1_1tree_1_1MidpointSplit.html#a95eff4025f6fef17cb5832472e006bbd">mlpack::tree::MidpointSplit::SplitNode</a></div><div class="ttdeci">static bool SplitNode(const BoundType &bound, MatType &data, const size_t begin, const size_t count, SplitInfo &splitInfo)</div><div class="ttdoc">Find the partition of the node. </div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1MidpointSplit_html_a9e35881dc80212dd155f620e45a77be3"><div class="ttname"><a href="classmlpack_1_1tree_1_1MidpointSplit.html#a9e35881dc80212dd155f620e45a77be3">mlpack::tree::MidpointSplit::PerformSplit</a></div><div class="ttdeci">static size_t PerformSplit(MatType &data, const size_t begin, const size_t count, const SplitInfo &splitInfo, std::vector< size_t > &oldFromNew)</div><div class="ttdoc">Perform the split process according to the information about the split and return the list of changed...</div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00098">midpoint_split.hpp:98</a></div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1MidpointSplit_html_a66f6747fa959b473f7c0921b756080dc"><div class="ttname"><a href="classmlpack_1_1tree_1_1MidpointSplit.html#a66f6747fa959b473f7c0921b756080dc">mlpack::tree::MidpointSplit::PerformSplit</a></div><div class="ttdeci">static size_t PerformSplit(MatType &data, const size_t begin, const size_t count, const SplitInfo &splitInfo)</div><div class="ttdoc">Perform the split process according to the information about the split. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00073">midpoint_split.hpp:73</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_1MidpointSplit_html_a4ee14de7e93943843c7b95c807e1e699"><div class="ttname"><a href="classmlpack_1_1tree_1_1MidpointSplit.html#a4ee14de7e93943843c7b95c807e1e699">mlpack::tree::MidpointSplit::AssignToLeftNode</a></div><div class="ttdeci">static bool AssignToLeftNode(const VecType &point, const SplitInfo &splitInfo)</div><div class="ttdoc">Indicates that a point should be assigned to the left subtree. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00115">midpoint_split.hpp:115</a></div></div>
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<div class="ttc" id="classmlpack_1_1tree_1_1MidpointSplit_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1MidpointSplit.html">mlpack::tree::MidpointSplit</a></div><div class="ttdoc">A binary space partitioning tree node is split into its left and right child. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00030">midpoint_split.hpp:30</a></div></div>
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<div class="ttc" id="perform__split_8hpp_html"><div class="ttname"><a href="perform__split_8hpp.html">perform_split.hpp</a></div></div>
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<div class="ttc" id="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo_html_a6ad65dc505cb0b48a3057ffbe911e912"><div class="ttname"><a href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#a6ad65dc505cb0b48a3057ffbe911e912">mlpack::tree::MidpointSplit::SplitInfo::splitVal</a></div><div class="ttdeci">double splitVal</div><div class="ttdoc">The split in dimension splitDimension is based on this value. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00039">midpoint_split.hpp:39</a></div></div>
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<div class="ttc" id="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo_html"><div class="ttname"><a href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html">mlpack::tree::MidpointSplit::SplitInfo</a></div><div class="ttdoc">A struct that contains an information about the split. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00034">midpoint_split.hpp:34</a></div></div>
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<div class="ttc" id="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo_html_af0cef441de07f5400234f638a5640842"><div class="ttname"><a href="structmlpack_1_1tree_1_1MidpointSplit_1_1SplitInfo.html#af0cef441de07f5400234f638a5640842">mlpack::tree::MidpointSplit::SplitInfo::splitDimension</a></div><div class="ttdeci">size_t splitDimension</div><div class="ttdoc">The dimension to split the node on. </div><div class="ttdef"><b>Definition:</b> <a href="midpoint__split_8hpp_source.html#l00037">midpoint_split.hpp:37</a></div></div>
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