119 lines
16 KiB
HTML
119 lines
16 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
|
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
|
|
<meta name="generator" content="Doxygen 1.8.11"/>
|
|
<title>mlpack: src/mlpack/methods/decision_tree/best_binary_numeric_split.hpp Source File</title>
|
|
<link href="tabs.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="jquery.js"></script>
|
|
<script type="text/javascript" src="dynsections.js"></script>
|
|
<link href="search/search.css" rel="stylesheet" type="text/css"/>
|
|
<script type="text/javascript" src="search/searchdata.js"></script>
|
|
<script type="text/javascript" src="search/search.js"></script>
|
|
<script type="text/javascript">
|
|
$(document).ready(function() { init_search(); });
|
|
</script>
|
|
<link href="doxygen.css" rel="stylesheet" type="text/css" />
|
|
<link href="extra-stylesheet.css" rel="stylesheet" type="text/css"/>
|
|
</head>
|
|
<body>
|
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
|
<div id="titlearea">
|
|
<table cellspacing="0" cellpadding="0">
|
|
<tbody>
|
|
<tr style="height: 56px;">
|
|
<td id="projectalign" style="padding-left: 0.5em;">
|
|
<div id="projectname">mlpack
|
|
 <span id="projectnumber">master</span>
|
|
</div>
|
|
</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
</div>
|
|
<!-- end header part -->
|
|
<!-- Generated by Doxygen 1.8.11 -->
|
|
<script type="text/javascript">
|
|
var searchBox = new SearchBox("searchBox", "search",false,'Search');
|
|
</script>
|
|
<div id="navrow1" class="tabs">
|
|
<ul class="tablist">
|
|
<li><a href="index.html"><span>Main Page</span></a></li>
|
|
<li><a href="pages.html"><span>Related Pages</span></a></li>
|
|
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
|
|
<li><a href="annotated.html"><span>Classes</span></a></li>
|
|
<li class="current"><a href="files.html"><span>Files</span></a></li>
|
|
<li>
|
|
<div id="MSearchBox" class="MSearchBoxInactive">
|
|
<span class="left">
|
|
<img id="MSearchSelect" src="search/mag_sel.png"
|
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
|
alt=""/>
|
|
<input type="text" id="MSearchField" value="Search" accesskey="S"
|
|
onfocus="searchBox.OnSearchFieldFocus(true)"
|
|
onblur="searchBox.OnSearchFieldFocus(false)"
|
|
onkeyup="searchBox.OnSearchFieldChange(event)"/>
|
|
</span><span class="right">
|
|
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
|
|
</span>
|
|
</div>
|
|
</li>
|
|
</ul>
|
|
</div>
|
|
<div id="navrow2" class="tabs2">
|
|
<ul class="tablist">
|
|
<li><a href="files.html"><span>File List</span></a></li>
|
|
<li><a href="globals.html"><span>File Members</span></a></li>
|
|
</ul>
|
|
</div>
|
|
<!-- window showing the filter options -->
|
|
<div id="MSearchSelectWindow"
|
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
|
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
|
</div>
|
|
|
|
<!-- iframe showing the search results (closed by default) -->
|
|
<div id="MSearchResultsWindow">
|
|
<iframe src="javascript:void(0)" frameborder="0"
|
|
name="MSearchResults" id="MSearchResults">
|
|
</iframe>
|
|
</div>
|
|
|
|
<div id="nav-path" class="navpath">
|
|
<ul>
|
|
<li class="navelem"><a class="el" href="dir_68267d1309a1af8e8297ef4c3efbcdba.html">src</a></li><li class="navelem"><a class="el" href="dir_44a936ef30fc126706c6284a2fc0c990.html">mlpack</a></li><li class="navelem"><a class="el" href="dir_3cfbf900288ec2fe8dd2c2c8482f216e.html">methods</a></li><li class="navelem"><a class="el" href="dir_f295b20b1dd4e5e0a64437251c55c9ac.html">decision_tree</a></li> </ul>
|
|
</div>
|
|
</div><!-- top -->
|
|
<div class="header">
|
|
<div class="headertitle">
|
|
<div class="title">best_binary_numeric_split.hpp</div> </div>
|
|
</div><!--header-->
|
|
<div class="contents">
|
|
<a href="best__binary__numeric__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="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#ifndef MLPACK_METHODS_DECISION_TREE_BEST_BINARY_NUMERIC_SPLIT_HPP</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#define MLPACK_METHODS_DECISION_TREE_BEST_BINARY_NUMERIC_SPLIT_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>tree {</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">template</span><<span class="keyword">typename</span> FitnessFunction></div><div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html"> 22</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html">BestBinaryNumericSplit</a></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> {</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="comment">// No extra info needed for split.</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00027"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html"> 27</a></span>  <span class="keyword">class </span><a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo</a> { };</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">template</span><<span class="keyword">typename</span> VecType></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">static</span> <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#af5e0d8a685cdd17f1d97b97fb61e1020">SplitIfBetter</a>(</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> bestGain,</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> VecType& data,</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">const</span> arma::Row<size_t>& labels,</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> numClasses,</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> minimumLeafSize,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  arma::Col<typename VecType::elem_type>& classProbabilities,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<typename VecType::elem_type></a>& aux);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#a8cf631582d65026650f641c2615ce394"> 62</a></span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#a8cf631582d65026650f641c2615ce394">NumChildren</a>(<span class="keyword">const</span> arma::Col<ElemType>& <span class="comment">/* classProbabilities */</span>,</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">const</span> <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<ElemType></a>& <span class="comment">/* aux */</span>)</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> 2;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">template</span><<span class="keyword">typename</span> ElemType></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#a50e46b07c1f7e0a2cfc5025e24abef4d">CalculateDirection</a>(</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">const</span> ElemType& point,</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">const</span> arma::Col<ElemType>& classProbabilities,</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">const</span> <a class="code" href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html">AuxiliarySplitInfo<ElemType></a>& <span class="comment">/* aux */</span>);</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="l00082"></a><span class="lineno"> 82</span> } <span class="comment">// namespace tree</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// Include implementation.</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#include "best_binary_numeric_split_impl.hpp"</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="classmlpack_1_1tree_1_1BestBinaryNumericSplit_html_af5e0d8a685cdd17f1d97b97fb61e1020"><div class="ttname"><a href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#af5e0d8a685cdd17f1d97b97fb61e1020">mlpack::tree::BestBinaryNumericSplit::SplitIfBetter</a></div><div class="ttdeci">static double SplitIfBetter(const double bestGain, const VecType &data, 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>
|
|
<div class="ttc" id="classmlpack_1_1tree_1_1BestBinaryNumericSplit_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html">mlpack::tree::BestBinaryNumericSplit</a></div><div class="ttdoc">The BestBinaryNumericSplit is a splitting function for decision trees that will exhaustively search a...</div><div class="ttdef"><b>Definition:</b> <a href="best__binary__numeric__split_8hpp_source.html#l00022">best_binary_numeric_split.hpp:22</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_1tree_1_1BestBinaryNumericSplit_html_a8cf631582d65026650f641c2615ce394"><div class="ttname"><a href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#a8cf631582d65026650f641c2615ce394">mlpack::tree::BestBinaryNumericSplit::NumChildren</a></div><div class="ttdeci">static size_t NumChildren(const arma::Col< ElemType > &, const AuxiliarySplitInfo< ElemType > &)</div><div class="ttdoc">Returns 2, since the binary split always has two children. </div><div class="ttdef"><b>Definition:</b> <a href="best__binary__numeric__split_8hpp_source.html#l00062">best_binary_numeric_split.hpp:62</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_1tree_1_1BestBinaryNumericSplit_html_a50e46b07c1f7e0a2cfc5025e24abef4d"><div class="ttname"><a href="classmlpack_1_1tree_1_1BestBinaryNumericSplit.html#a50e46b07c1f7e0a2cfc5025e24abef4d">mlpack::tree::BestBinaryNumericSplit::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">Given a point, calculate which child it should go to (left or right). </div></div>
|
|
<div class="ttc" id="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo_html"><div class="ttname"><a href="classmlpack_1_1tree_1_1BestBinaryNumericSplit_1_1AuxiliarySplitInfo.html">mlpack::tree::BestBinaryNumericSplit::AuxiliarySplitInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="best__binary__numeric__split_8hpp_source.html#l00027">best_binary_numeric_split.hpp:27</a></div></div>
|
|
</div><!-- fragment --></div><!-- contents -->
|
|
<!-- start footer part -->
|
|
<hr class="footer"/><address class="footer"><small>
|
|
Generated by  <a href="http://www.doxygen.org/index.html">
|
|
<img class="footer" src="doxygen.png" alt="doxygen"/>
|
|
</a> 1.8.11
|
|
</small></address>
|
|
</body>
|
|
<script type="text/javascript">
|
|
var x = document.getElementsByClassName("formulaDsp");
|
|
var i;
|
|
for (i = 0; i < x.length; i++)
|
|
{
|
|
x[i].width /= 4;
|
|
}
|
|
</script>
|
|
</html>
|