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<a href="nca_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="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef MLPACK_METHODS_NCA_NCA_HPP</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#define MLPACK_METHODS_NCA_NCA_HPP</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <<a class="code" href="lmetric_8hpp.html">mlpack/core/metrics/lmetric.hpp</a>></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <<a class="code" href="sgd_8hpp.html">mlpack/core/optimizers/sgd/sgd.hpp</a>></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "<a class="code" href="nca__softmax__error__function_8hpp.html">nca_softmax_error_function.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"><a class="line" href="namespacemlpack_1_1nca.html"> 22</a></span> <span class="keyword">namespace </span>nca {</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">template</span><<span class="keyword">typename</span> MetricType = <a class="code" href="namespacemlpack_1_1metric.html#add19cf9fc6f452a0dad6635a93451be7">metric::SquaredEuclideanDistance</a>,</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">template</span><<span class="keyword">typename</span>> <span class="keyword">class </span>OptimizerType = <a class="code" href="classmlpack_1_1optimization_1_1SGD.html">optimization::StandardSGD</a>></div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html"> 49</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1nca_1_1NCA.html">NCA</a></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a2b87114c9ce1cebd20ce48524f4a9c54">NCA</a>(<span class="keyword">const</span> arma::mat& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#ac487cf1f5402ba9a908ec4ef3081df6e">dataset</a>,</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">const</span> arma::Row<size_t>& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a8cf11316cd7928f4ca57576f9c68222f">labels</a>,</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  MetricType <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a71324ff6da7977d717c7da5461b4a150">metric</a> = MetricType());</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#ab986c503437c2c2c0cbd9f47a02b9f9a">LearnDistance</a>(arma::mat& outputMatrix);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#aa71006c7c95a57abf850a7d7d23ee681"> 81</a></span>  <span class="keyword">const</span> arma::mat& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#aa71006c7c95a57abf850a7d7d23ee681">Dataset</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#ac487cf1f5402ba9a908ec4ef3081df6e">dataset</a>; }</div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#a8edc80ced277d8cb374447f737b29854"> 83</a></span>  <span class="keyword">const</span> arma::Row<size_t>& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a8edc80ced277d8cb374447f737b29854">Labels</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a8cf11316cd7928f4ca57576f9c68222f">labels</a>; }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#aced0927300b593f25ebf47c4550f0084"> 86</a></span>  <span class="keyword">const</span> OptimizerType<SoftmaxErrorFunction<MetricType> >& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#aced0927300b593f25ebf47c4550f0084">Optimizer</a>()<span class="keyword"> const</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#adf45426906d25fb7b257ae213c8381ad">optimizer</a>; }</div><div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#a7637894d6d48a1a4624ecbe7df26a9a7"> 88</a></span>  OptimizerType<SoftmaxErrorFunction<MetricType> >& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a7637894d6d48a1a4624ecbe7df26a9a7">Optimizer</a>()</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  { <span class="keywordflow">return</span> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#adf45426906d25fb7b257ae213c8381ad">optimizer</a>; }</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#ac487cf1f5402ba9a908ec4ef3081df6e"> 93</a></span>  <span class="keyword">const</span> arma::mat& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#ac487cf1f5402ba9a908ec4ef3081df6e">dataset</a>;</div><div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#a8cf11316cd7928f4ca57576f9c68222f"> 95</a></span>  <span class="keyword">const</span> arma::Row<size_t>& <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a8cf11316cd7928f4ca57576f9c68222f">labels</a>;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#a71324ff6da7977d717c7da5461b4a150"> 98</a></span>  MetricType <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a71324ff6da7977d717c7da5461b4a150">metric</a>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#a26fbbdee3f3b88e3f9d50fadfe6a2d86"> 101</a></span>  <a class="code" href="classmlpack_1_1nca_1_1SoftmaxErrorFunction.html">SoftmaxErrorFunction<MetricType></a> <a class="code" href="classmlpack_1_1nca_1_1NCA.html#a26fbbdee3f3b88e3f9d50fadfe6a2d86">errorFunction</a>;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="classmlpack_1_1nca_1_1NCA.html#adf45426906d25fb7b257ae213c8381ad"> 104</a></span>  OptimizerType<SoftmaxErrorFunction<MetricType> > <a class="code" href="classmlpack_1_1nca_1_1NCA.html#adf45426906d25fb7b257ae213c8381ad">optimizer</a>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> };</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> } <span class="comment">// namespace nca</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// Include the implementation.</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#include "nca_impl.hpp"</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a26fbbdee3f3b88e3f9d50fadfe6a2d86"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a26fbbdee3f3b88e3f9d50fadfe6a2d86">mlpack::nca::NCA::errorFunction</a></div><div class="ttdeci">SoftmaxErrorFunction< MetricType > errorFunction</div><div class="ttdoc">The function to optimize. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00101">nca.hpp:101</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a71324ff6da7977d717c7da5461b4a150"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a71324ff6da7977d717c7da5461b4a150">mlpack::nca::NCA::metric</a></div><div class="ttdeci">MetricType metric</div><div class="ttdoc">Metric to be used. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00098">nca.hpp:98</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_ac487cf1f5402ba9a908ec4ef3081df6e"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#ac487cf1f5402ba9a908ec4ef3081df6e">mlpack::nca::NCA::dataset</a></div><div class="ttdeci">const arma::mat & dataset</div><div class="ttdoc">Dataset reference. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00093">nca.hpp:93</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1SoftmaxErrorFunction_html"><div class="ttname"><a href="classmlpack_1_1nca_1_1SoftmaxErrorFunction.html">mlpack::nca::SoftmaxErrorFunction</a></div><div class="ttdoc">The "softmax" stochastic neighbor assignment probability function. </div><div class="ttdef"><b>Definition:</b> <a href="nca__softmax__error__function_8hpp_source.html#l00042">nca_softmax_error_function.hpp:42</a></div></div>
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<div class="ttc" id="lmetric_8hpp_html"><div class="ttname"><a href="lmetric_8hpp.html">lmetric.hpp</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_adf45426906d25fb7b257ae213c8381ad"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#adf45426906d25fb7b257ae213c8381ad">mlpack::nca::NCA::optimizer</a></div><div class="ttdeci">OptimizerType< SoftmaxErrorFunction< MetricType > > optimizer</div><div class="ttdoc">The optimizer to use. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00104">nca.hpp:104</a></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="namespacemlpack_1_1metric_html_add19cf9fc6f452a0dad6635a93451be7"><div class="ttname"><a href="namespacemlpack_1_1metric.html#add19cf9fc6f452a0dad6635a93451be7">mlpack::metric::SquaredEuclideanDistance</a></div><div class="ttdeci">LMetric< 2, false > SquaredEuclideanDistance</div><div class="ttdoc">The squared Euclidean (L2) distance. </div><div class="ttdef"><b>Definition:</b> <a href="lmetric_8hpp_source.html#l00107">lmetric.hpp:107</a></div></div>
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<div class="ttc" id="nca__softmax__error__function_8hpp_html"><div class="ttname"><a href="nca__softmax__error__function_8hpp.html">nca_softmax_error_function.hpp</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_aced0927300b593f25ebf47c4550f0084"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#aced0927300b593f25ebf47c4550f0084">mlpack::nca::NCA::Optimizer</a></div><div class="ttdeci">const OptimizerType< SoftmaxErrorFunction< MetricType > > & Optimizer() const </div><div class="ttdoc">Get the optimizer. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00086">nca.hpp:86</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a2b87114c9ce1cebd20ce48524f4a9c54"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a2b87114c9ce1cebd20ce48524f4a9c54">mlpack::nca::NCA::NCA</a></div><div class="ttdeci">NCA(const arma::mat &dataset, const arma::Row< size_t > &labels, MetricType metric=MetricType())</div><div class="ttdoc">Construct the Neighborhood Components Analysis object. </div></div>
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<div class="ttc" id="sgd_8hpp_html"><div class="ttname"><a href="sgd_8hpp.html">sgd.hpp</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a8edc80ced277d8cb374447f737b29854"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a8edc80ced277d8cb374447f737b29854">mlpack::nca::NCA::Labels</a></div><div class="ttdeci">const arma::Row< size_t > & Labels() const </div><div class="ttdoc">Get the labels reference. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00083">nca.hpp:83</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_aa71006c7c95a57abf850a7d7d23ee681"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#aa71006c7c95a57abf850a7d7d23ee681">mlpack::nca::NCA::Dataset</a></div><div class="ttdeci">const arma::mat & Dataset() const </div><div class="ttdoc">Get the dataset reference. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00081">nca.hpp:81</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a8cf11316cd7928f4ca57576f9c68222f"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a8cf11316cd7928f4ca57576f9c68222f">mlpack::nca::NCA::labels</a></div><div class="ttdeci">const arma::Row< size_t > & labels</div><div class="ttdoc">Labels reference. </div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00095">nca.hpp:95</a></div></div>
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<div class="ttc" id="classmlpack_1_1optimization_1_1SGD_html"><div class="ttname"><a href="classmlpack_1_1optimization_1_1SGD.html">mlpack::optimization::SGD</a></div><div class="ttdoc">Stochastic Gradient Descent is a technique for minimizing a function which can be expressed as a sum ...</div><div class="ttdef"><b>Definition:</b> <a href="sgd_8hpp_source.html#l00077">sgd.hpp:77</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html">mlpack::nca::NCA</a></div><div class="ttdoc">An implementation of Neighborhood Components Analysis, both a linear dimensionality reduction techniq...</div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00049">nca.hpp:49</a></div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_ab986c503437c2c2c0cbd9f47a02b9f9a"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#ab986c503437c2c2c0cbd9f47a02b9f9a">mlpack::nca::NCA::LearnDistance</a></div><div class="ttdeci">void LearnDistance(arma::mat &outputMatrix)</div><div class="ttdoc">Perform Neighborhood Components Analysis. </div></div>
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<div class="ttc" id="classmlpack_1_1nca_1_1NCA_html_a7637894d6d48a1a4624ecbe7df26a9a7"><div class="ttname"><a href="classmlpack_1_1nca_1_1NCA.html#a7637894d6d48a1a4624ecbe7df26a9a7">mlpack::nca::NCA::Optimizer</a></div><div class="ttdeci">OptimizerType< SoftmaxErrorFunction< MetricType > > & Optimizer()</div><div class="ttdef"><b>Definition:</b> <a href="nca_8hpp_source.html#l00088">nca.hpp:88</a></div></div>
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