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<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_04cdefcc9a97fb221ee3f2d7fb8aab76.html">ann</a></li><li class="navelem"><a class="el" href="dir_b52cc5b391c1a60ddf624b13b597843f.html">init_rules</a></li> </ul>
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<div class="title">oivs_init.hpp</div> </div>
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<a href="oivs__init_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="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#ifndef MLPACK_METHODS_ANN_INIT_RULES_OIVS_INIT_HPP</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#define MLPACK_METHODS_ANN_INIT_RULES_OIVS_INIT_HPP</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="prereqs_8hpp.html">mlpack/prereqs.hpp</a>></span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="logistic__function_8hpp.html">mlpack/methods/ann/activation_functions/logistic_function.hpp</a>></span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="ann_2init__rules_2random__init_8hpp.html">random_init.hpp</a>"</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span><a class="code" href="namespacemlpack.html">mlpack</a> {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span>ann {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="keyword">template</span><</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">class </span>ActivationFunction = LogisticFunction</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> ></div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html"> 59</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html">OivsInitialization</a></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#a9f4bbb8b83d194198f8ec33d21c36745"> 69</a></span>  <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a9f4bbb8b83d194198f8ec33d21c36745">OivsInitialization</a>(<span class="keyword">const</span> <span class="keywordtype">double</span> epsilon = 0.1,</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">k</a> = 5,</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a> = 0.9) :</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">k</a>(<a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">k</a>), <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a>(<a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a>),</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a480e0fb4088de412628cbe805973213d">b</a>(<a class="code" href="namespacestd.html">std</a>::abs(ActivationFunction::Inv(1 - epsilon) -</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  ActivationFunction::Inv(epsilon)))</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  {</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  }</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">template</span><<span class="keyword">typename</span> eT></div><div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#ae25cb09b1e03b2493bf8efd873dfa90a"> 86</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ae25cb09b1e03b2493bf8efd873dfa90a">Initialize</a>(arma::Mat<eT>& W, <span class="keyword">const</span> <span class="keywordtype">size_t</span> rows, <span class="keyword">const</span> <span class="keywordtype">size_t</span> cols)</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>  <a class="code" href="classmlpack_1_1ann_1_1RandomInitialization.html">RandomInitialization</a> randomInit(-<a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a>, <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a>);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  randomInit.<a class="code" href="classmlpack_1_1ann_1_1RandomInitialization.html#a80d8b73d04b33ce114cfb4663831747c">Initialize</a>(W, rows, 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>  W = (<a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a480e0fb4088de412628cbe805973213d">b</a> / (<a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">k</a> * rows)) * arma::sqrt(W + 1);</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  }</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">template</span><<span class="keyword">typename</span> eT></div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#a06819a0620d1a639b973fd29c980bcc5"> 104</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a06819a0620d1a639b973fd29c980bcc5">Initialize</a>(arma::Cube<eT>& W,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> rows,</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> cols,</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> slices)</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  {</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  W = arma::Cube<eT>(rows, cols, slices);</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < slices; i++)</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ae25cb09b1e03b2493bf8efd873dfa90a">Initialize</a>(W.slice(i), rows, cols);</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a"> 117</a></span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">k</a>;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27"> 120</a></span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">gamma</a>;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classmlpack_1_1ann_1_1OivsInitialization.html#a480e0fb4088de412628cbe805973213d"> 123</a></span>  <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="classmlpack_1_1ann_1_1OivsInitialization.html#a480e0fb4088de412628cbe805973213d">b</a>;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> }; <span class="comment">// class OivsInitialization</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> } <span class="comment">// namespace ann</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="ann_2init__rules_2random__init_8hpp_html"><div class="ttname"><a href="ann_2init__rules_2random__init_8hpp.html">random_init.hpp</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="logistic__function_8hpp_html"><div class="ttname"><a href="logistic__function_8hpp.html">logistic_function.hpp</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1RandomInitialization_html"><div class="ttname"><a href="classmlpack_1_1ann_1_1RandomInitialization.html">mlpack::ann::RandomInitialization</a></div><div class="ttdoc">This class is used to initialize randomly the weight matrix. </div><div class="ttdef"><b>Definition:</b> <a href="ann_2init__rules_2random__init_8hpp_source.html#l00024">random_init.hpp:24</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="namespacestd_html"><div class="ttname"><a href="namespacestd.html">std</a></div><div class="ttdef"><b>Definition:</b> <a href="prereqs_8hpp_source.html#l00056">prereqs.hpp:56</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html">mlpack::ann::OivsInitialization</a></div><div class="ttdoc">This class is used to initialize the weight matrix with the oivs method. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00059">oivs_init.hpp:59</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_ae25cb09b1e03b2493bf8efd873dfa90a"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#ae25cb09b1e03b2493bf8efd873dfa90a">mlpack::ann::OivsInitialization::Initialize</a></div><div class="ttdeci">void Initialize(arma::Mat< eT > &W, const size_t rows, const size_t cols)</div><div class="ttdoc">Initialize the elements of the specified weight matrix with the oivs method. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00086">oivs_init.hpp:86</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_a06819a0620d1a639b973fd29c980bcc5"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#a06819a0620d1a639b973fd29c980bcc5">mlpack::ann::OivsInitialization::Initialize</a></div><div class="ttdeci">void Initialize(arma::Cube< eT > &W, const size_t rows, const size_t cols, const size_t slices)</div><div class="ttdoc">Initialize the elements of the specified weight 3rd order tensor with the oivs method. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00104">oivs_init.hpp:104</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_a376fbe1165b74f8f883710dfff73ca27"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#a376fbe1165b74f8f883710dfff73ca27">mlpack::ann::OivsInitialization::gamma</a></div><div class="ttdeci">const double gamma</div><div class="ttdoc">Parameter to define the uniform random range. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00120">oivs_init.hpp:120</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_a480e0fb4088de412628cbe805973213d"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#a480e0fb4088de412628cbe805973213d">mlpack::ann::OivsInitialization::b</a></div><div class="ttdeci">const double b</div><div class="ttdoc">Parameter to control the activation region. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00123">oivs_init.hpp:123</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_ab2f65131350aa79eec6203ab5094834a"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#ab2f65131350aa79eec6203ab5094834a">mlpack::ann::OivsInitialization::k</a></div><div class="ttdeci">const int k</div><div class="ttdoc">Parameter to control the activation region width. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00117">oivs_init.hpp:117</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1OivsInitialization_html_a9f4bbb8b83d194198f8ec33d21c36745"><div class="ttname"><a href="classmlpack_1_1ann_1_1OivsInitialization.html#a9f4bbb8b83d194198f8ec33d21c36745">mlpack::ann::OivsInitialization::OivsInitialization</a></div><div class="ttdeci">OivsInitialization(const double epsilon=0.1, const int k=5, const double gamma=0.9)</div><div class="ttdoc">Initialize the random initialization rule with the given values. </div><div class="ttdef"><b>Definition:</b> <a href="oivs__init_8hpp_source.html#l00069">oivs_init.hpp:69</a></div></div>
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<div class="ttc" id="classmlpack_1_1ann_1_1RandomInitialization_html_a80d8b73d04b33ce114cfb4663831747c"><div class="ttname"><a href="classmlpack_1_1ann_1_1RandomInitialization.html#a80d8b73d04b33ce114cfb4663831747c">mlpack::ann::RandomInitialization::Initialize</a></div><div class="ttdeci">void Initialize(arma::Mat< eT > &W, const size_t rows, const size_t cols)</div><div class="ttdoc">Initialize randomly the elements of the specified weight matrix. </div><div class="ttdef"><b>Definition:</b> <a href="ann_2init__rules_2random__init_8hpp_source.html#l00056">random_init.hpp:56</a></div></div>
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