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 <span id="projectnumber">1.1.0</span>
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<div id="projectbrief">An open source library for artificial neural networks.</div>
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<div class="title">DataSetView.h</div> </div>
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<a href="DataSetView_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef OPENANN_IO_DATA_SET_VIEW_H_</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor"></span><span class="preprocessor">#define OPENANN_IO_DATA_SET_VIEW_H_</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <Eigen/Core></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include <<a class="code" href="DataSet_8h.html">OpenANN/io/DataSet.h</a>></span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="keyword">namespace </span>OpenANN</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> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="keyword">class </span>Learner;</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> </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="code" href="classOpenANN_1_1DataSetView.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="classOpenANN_1_1DataSetView.html" title="An index-based dataset wrapper for representing efficient dataset views on any DataSet instance...">DataSetView</a> : <span class="keyword">public</span> <a class="code" href="classOpenANN_1_1DataSet.html" title="Data set interface. ">DataSet</a></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <a class="code" href="classOpenANN_1_1DataSetView.html#aeaf208522456810b44b1785520ee7bbe" title="Create an new instance on a given DataSetView (copy constructor) ">DataSetView</a>(<span class="keyword">const</span> <a class="code" href="classOpenANN_1_1DataSetView.html" title="An index-based dataset wrapper for representing efficient dataset views on any DataSet instance...">DataSetView</a>& dataset);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="classOpenANN_1_1DataSetView.html#a51728beac65c2bc4a877e2258c003fc3"> 40</a></span>  <a class="code" href="classOpenANN_1_1DataSetView.html#a51728beac65c2bc4a877e2258c003fc3" title="Create an empty view on a given OpenANN::DataSet without samples. ">DataSetView</a>(<a class="code" href="classOpenANN_1_1DataSet.html" title="Data set interface. ">DataSet</a>& dataset) : dataset(&dataset)</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  {}</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">template</span><<span class="keyword">typename</span> InputIt></div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="classOpenANN_1_1DataSetView.html#aab57dc05feed7325ad09f209bc873467"> 52</a></span>  <a class="code" href="classOpenANN_1_1DataSetView.html#aab57dc05feed7325ad09f209bc873467" title="Create a new dataset view on a given OpenANN::DataSet by using an STL-like interface on std::vector<i...">DataSetView</a>(<a class="code" href="classOpenANN_1_1DataSet.html" title="Data set interface. ">DataSet</a>& dataset, InputIt index_begin, InputIt index_end)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  : indices(index_begin, index_end), dataset(&dataset)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {}</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="code" href="classOpenANN_1_1DataSetView.html#a8fc5b66df2ab264cf2163fc8e3a328a2"> 59</a></span>  <span class="keyword">virtual</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a8fc5b66df2ab264cf2163fc8e3a328a2" title="Destructor for DataSetView (does nothing internally) ">~DataSetView</a>() {}</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a89ae7a8ee77f5fb0607f6d7f261f91b3" title="See OpenANN::DataSet::samples() ">samples</a>();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a614bdd2dc261dbe9e379723765f53bd4" title="See OpenANN::DataSet::inputs() ">inputs</a>();</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a25c1dd5587c6b091ab51d7453a2a0991" title="See OpenANN::DataSet::inputs() ">outputs</a>();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">virtual</span> Eigen::VectorXd& <a class="code" href="classOpenANN_1_1DataSetView.html#ab0cef529037bf44c108d39919d4a2f8c" title="See OpenANN::DataSet::getInstance(int) ">getInstance</a>(<span class="keywordtype">int</span> i);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">virtual</span> Eigen::VectorXd& <a class="code" href="classOpenANN_1_1DataSetView.html#ace03c1e4f730f5774b3d565a0a1d3257" title="See OpenANN::DataSet::getTarget(int) ">getTarget</a>(<span class="keywordtype">int</span> i);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a264b86cf7d6fedc8ed1089566c727c39" title="See OpenANN::DataSet::finishIteration(OpenANN::Learner&) ">finishIteration</a>(<a class="code" href="classOpenANN_1_1Learner.html" title="Common base class of all learning algorithms. ">Learner</a>& learner);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">virtual</span> <a class="code" href="classOpenANN_1_1DataSetView.html" title="An index-based dataset wrapper for representing efficient dataset views on any DataSet instance...">DataSetView</a>& <a class="code" href="classOpenANN_1_1DataSetView.html#a78d3cae4ef4aea3e03a872dec0017117" title="Shuffle the order of instances within this dataset view. ">shuffle</a>();</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  std::vector<int> indices;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="classOpenANN_1_1DataSet.html" title="Data set interface. ">DataSet</a>* dataset;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">friend</span> <span class="keywordtype">void</span> <a class="code" href="classOpenANN_1_1DataSetView.html#a078a612dde8d984daf1c4182113de56f" title="Friend declaration for direct access to indices. ">merge</a>(<a class="code" href="classOpenANN_1_1DataSetView.html" title="An index-based dataset wrapper for representing efficient dataset views on any DataSet instance...">DataSetView</a>& merging, std::vector<DataSetView>& groups);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> };</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keywordtype">void</span> <a class="code" href="namespaceOpenANN.html#a13b1b1f1aafaa8e3ed69ac284ece4ad3" title="Split the current DataSet into a specific number of DataSetView groups. ">split</a>(std::vector<DataSetView>& groups, DataSet& <a class="code" href="namespacesine.html#a05bec8eacbb152615ca2c70f612378ad">dataset</a>,</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">int</span> numberOfGroups, <span class="keywordtype">bool</span> shuffling = <span class="keyword">true</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> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="keywordtype">void</span> <a class="code" href="namespaceOpenANN.html#a13b1b1f1aafaa8e3ed69ac284ece4ad3" title="Split the current DataSet into a specific number of DataSetView groups. ">split</a>(std::vector<DataSetView>& groups, DataSet& <a class="code" href="namespacesine.html#a05bec8eacbb152615ca2c70f612378ad">dataset</a>,</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">double</span> ratio = 0.5, <span class="keywordtype">bool</span> shuffling = <span class="keyword">true</span>);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="keywordtype">void</span> <a class="code" href="namespaceOpenANN.html#aa6e817e8027439083f9638a6012abaea" title="Merge all viewing instances from a DataSetView into another existing one. ">merge</a>(DataSetView& merging, std::vector<DataSetView>& groups);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> DataSetView <a class="code" href="namespaceOpenANN.html#a962fcfdc6d2ed193660e303e4bf170a2" title="Sample random instances from the original data set. ">sample</a>(DataSet& dataSet, <span class="keywordtype">double</span> fraction, <span class="keywordtype">bool</span> replacement);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> } <span class="comment">// namespace OpenANN</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#endif // OPENANN_IO_DATA_SET_VIEW_H_</span></div>
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