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<div class="title">kill_empty_clusters.hpp</div> </div>
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<a href="kill__empty__clusters_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_METHODS_KMEANS_KILL_EMPTY_CLUSTERS_HPP</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __MLPACK_METHODS_KMEANS_KILL_EMPTY_CLUSTERS_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"> 18</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"> 19</span> <span class="keyword">namespace </span>kmeans {</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html"> 25</a></span> <span class="keyword">class </span><a class="code" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html">KillEmptyClusters</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="l00029"></a><span class="lineno"><a class="line" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9d86952920ecd0bd2e4ba96975632e30"> 29</a></span>  <a class="code" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9d86952920ecd0bd2e4ba96975632e30">KillEmptyClusters</a>() { }</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">template</span><<span class="keyword">typename</span> MetricType, <span class="keyword">typename</span> MatType></div><div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a84fcee6efcec8c09c4bec3cf1148c94b"> 49</a></span>  <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="prereqs_8hpp.html#ae8c57c7218a376f10cbdf0e50f1189ee">force_inline</a> <span class="keywordtype">size_t</span> <a class="code" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a84fcee6efcec8c09c4bec3cf1148c94b">EmptyCluster</a>(</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">const</span> MatType& <span class="comment">/* data */</span>,</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> emptyCluster,</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">const</span> arma::mat& <span class="comment">/* oldCentroids */</span>,</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  arma::mat& newCentroids,</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  arma::Col<size_t>& <span class="comment">/* clusterCounts */</span>,</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  MetricType& <span class="comment">/* metric */</span>,</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> <span class="comment">/* iteration */</span>)</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// Kill the empty cluster.</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  newCentroids.col(emptyCluster).fill(DBL_MAX);</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> 0; <span class="comment">// No points were changed.</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  }</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Archive></div><div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9ca2c1a14acf22b34359debd4fe3c201"> 65</a></span>  <span class="keywordtype">void</span> <a class="code" href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9ca2c1a14acf22b34359debd4fe3c201">Serialize</a>(Archive& <span class="comment">/* ar */</span>, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <span class="comment">/* version */</span>) { }</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="l00068"></a><span class="lineno"> 68</span> } <span class="comment">// namespace kmeans</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> } <span class="comment">// namespace mlpack</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</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="classmlpack_1_1kmeans_1_1KillEmptyClusters_html_a9ca2c1a14acf22b34359debd4fe3c201"><div class="ttname"><a href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9ca2c1a14acf22b34359debd4fe3c201">mlpack::kmeans::KillEmptyClusters::Serialize</a></div><div class="ttdeci">void Serialize(Archive &, const unsigned int)</div><div class="ttdoc">Serialize the empty cluster policy (nothing to do). </div><div class="ttdef"><b>Definition:</b> <a href="kill__empty__clusters_8hpp_source.html#l00065">kill_empty_clusters.hpp:65</a></div></div>
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<div class="ttc" id="classmlpack_1_1kmeans_1_1KillEmptyClusters_html_a84fcee6efcec8c09c4bec3cf1148c94b"><div class="ttname"><a href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a84fcee6efcec8c09c4bec3cf1148c94b">mlpack::kmeans::KillEmptyClusters::EmptyCluster</a></div><div class="ttdeci">static force_inline size_t EmptyCluster(const MatType &, const size_t emptyCluster, const arma::mat &, arma::mat &newCentroids, arma::Col< size_t > &, MetricType &, const size_t)</div><div class="ttdoc">This function sets an empty cluster found during k-means to all DBL_MAX (i.e. </div><div class="ttdef"><b>Definition:</b> <a href="kill__empty__clusters_8hpp_source.html#l00049">kill_empty_clusters.hpp:49</a></div></div>
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<div class="ttc" id="prereqs_8hpp_html_ae8c57c7218a376f10cbdf0e50f1189ee"><div class="ttname"><a href="prereqs_8hpp.html#ae8c57c7218a376f10cbdf0e50f1189ee">force_inline</a></div><div class="ttdeci">#define force_inline</div><div class="ttdef"><b>Definition:</b> <a href="prereqs_8hpp_source.html#l00044">prereqs.hpp:44</a></div></div>
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<div class="ttc" id="classmlpack_1_1kmeans_1_1KillEmptyClusters_html"><div class="ttname"><a href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html">mlpack::kmeans::KillEmptyClusters</a></div><div class="ttdoc">Policy which allows K-Means to "kill" empty clusters without any error being reported. </div><div class="ttdef"><b>Definition:</b> <a href="kill__empty__clusters_8hpp_source.html#l00025">kill_empty_clusters.hpp:25</a></div></div>
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<div class="ttc" id="classmlpack_1_1kmeans_1_1KillEmptyClusters_html_a9d86952920ecd0bd2e4ba96975632e30"><div class="ttname"><a href="classmlpack_1_1kmeans_1_1KillEmptyClusters.html#a9d86952920ecd0bd2e4ba96975632e30">mlpack::kmeans::KillEmptyClusters::KillEmptyClusters</a></div><div class="ttdeci">KillEmptyClusters()</div><div class="ttdoc">Default constructor required by EmptyClusterPolicy policy. </div><div class="ttdef"><b>Definition:</b> <a href="kill__empty__clusters_8hpp_source.html#l00029">kill_empty_clusters.hpp:29</a></div></div>
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