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<a href="binarize_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="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef MLPACK_CORE_DATA_BINARIZE_HPP</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define MLPACK_CORE_DATA_BINARIZE_HPP</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></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"><a class="line" href="namespacemlpack.html"> 18</a></span> <span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00019"></a><span class="lineno"><a class="line" href="namespacemlpack_1_1data.html"> 19</a></span> <span class="keyword">namespace </span>data {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="namespacemlpack_1_1data.html#a28da72e55467d0872681827b30b490ac"> 41</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacemlpack_1_1data.html#a28da72e55467d0872681827b30b490ac">Binarize</a>(<span class="keyword">const</span> arma::Mat<T>& input,</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  arma::Mat<T>& output,</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> threshold)</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  output.copy_size(input);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> totalElems = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(input.n_elem);</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">const</span> T *inPtr = input.memptr();</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  T *outPtr = output.memptr();</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="preprocessor"> #pragma omp parallel for</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < totalElems; ++i)</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (inPtr[i] > threshold)</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  outPtr[i] = 1;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  outPtr[i] = 0;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> }</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">template</span><<span class="keyword">typename</span> T></div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="namespacemlpack_1_1data.html#a39606420520e81f5e87d6ea1e64c27ae"> 83</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacemlpack_1_1data.html#a28da72e55467d0872681827b30b490ac">Binarize</a>(<span class="keyword">const</span> arma::Mat<T>& input,</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  arma::Mat<T>& output,</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> threshold,</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> dimension)</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>  output = input;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> totalCols = <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(input.n_cols);</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="preprocessor"> #pragma omp parallel for</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < totalCols; ++i)</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> (input(dimension, i) > threshold)</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  output(dimension, i) = 1;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  output(dimension, i) = 0;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> } <span class="comment">// namespace data</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> } <span class="comment">// namespace mlpack</span></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="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="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_1data_html_a28da72e55467d0872681827b30b490ac"><div class="ttname"><a href="namespacemlpack_1_1data.html#a28da72e55467d0872681827b30b490ac">mlpack::data::Binarize</a></div><div class="ttdeci">void Binarize(const arma::Mat< T > &input, arma::Mat< T > &output, const double threshold)</div><div class="ttdoc">Given an input dataset and threshold, set values greater than threshold to 1 and values less than or ...</div><div class="ttdef"><b>Definition:</b> <a href="binarize_8hpp_source.html#l00041">binarize.hpp:41</a></div></div>
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