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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Vowpal Wabbit: /mnt/c/w/linux/vowpal_wabbit/vowpalwabbit/bs.cc File Reference</title>
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<li class="navelem"><a class="el" href="dir_23e69c20c74a4591a9cfc65aaff8f3d1.html">vowpalwabbit</a></li> </ul>
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<div class="header">
<div class="summary">
<a href="#nested-classes">Classes</a> |
<a href="#func-members">Functions</a> </div>
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<div class="title">bs.cc File Reference</div> </div>
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<div class="textblock"><code>#include <cfloat></code><br />
<code>#include <cmath></code><br />
<code>#include <cerrno></code><br />
<code>#include <sstream></code><br />
<code>#include <numeric></code><br />
<code>#include <vector></code><br />
<code>#include <memory></code><br />
<code>#include "<a class="el" href="reductions_8h_source.html">reductions.h</a>"</code><br />
<code>#include "<a class="el" href="rand48_8h_source.html">rand48.h</a>"</code><br />
<code>#include "<a class="el" href="vw_8h_source.html">vw.h</a>"</code><br />
<code>#include "<a class="el" href="bs_8h_source.html">bs.h</a>"</code><br />
<code>#include "<a class="el" href="vw__exception_8h_source.html">vw_exception.h</a>"</code><br />
</div>
<p><a href="bs_8cc_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structbs.html">bs</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a8392dfd2ed19750f6eb14818cefd67ee"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a8392dfd2ed19750f6eb14818cefd67ee">bs_predict_mean</a> (<a class="el" href="structvw.html">vw</a> &all, <a class="el" href="structexample.html">example</a> &ec, std::vector< double > &pred_vec)</td></tr>
<tr class="separator:a8392dfd2ed19750f6eb14818cefd67ee"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4fb086d2b446da2c3b9537066aa7ae43"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a4fb086d2b446da2c3b9537066aa7ae43">bs_predict_vote</a> (<a class="el" href="structexample.html">example</a> &ec, std::vector< double > &pred_vec)</td></tr>
<tr class="separator:a4fb086d2b446da2c3b9537066aa7ae43"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4bece77a15f02909b0c3d134ddf986e3"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a4bece77a15f02909b0c3d134ddf986e3">print_result</a> (int <a class="el" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>, float res, <a class="el" href="structv__array.html">v_array</a>< char > tag, float lb, float ub)</td></tr>
<tr class="separator:a4bece77a15f02909b0c3d134ddf986e3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8a721718f8172b3699825bfe4e512f12"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a8a721718f8172b3699825bfe4e512f12">output_example</a> (<a class="el" href="structvw.html">vw</a> &all, <a class="el" href="structbs.html">bs</a> &d, <a class="el" href="structexample.html">example</a> &ec)</td></tr>
<tr class="separator:a8a721718f8172b3699825bfe4e512f12"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a122ec98ed8ba1726a02465ce5322d60d"><td class="memTemplParams" colspan="2">template<bool is_learn> </td></tr>
<tr class="memitem:a122ec98ed8ba1726a02465ce5322d60d"><td class="memTemplItemLeft" align="right" valign="top">void </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a122ec98ed8ba1726a02465ce5322d60d">predict_or_learn</a> (<a class="el" href="structbs.html">bs</a> &d, <a class="el" href="namespaceLEARNER.html#a43eb8cec4287b4ad02967d7012bbf0a3">single_learner</a> &base, <a class="el" href="structexample.html">example</a> &ec)</td></tr>
<tr class="separator:a122ec98ed8ba1726a02465ce5322d60d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aba9b80c92e2960a593c00816f309caa2"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#aba9b80c92e2960a593c00816f309caa2">finish_example</a> (<a class="el" href="structvw.html">vw</a> &all, <a class="el" href="structbs.html">bs</a> &d, <a class="el" href="structexample.html">example</a> &ec)</td></tr>
<tr class="separator:aba9b80c92e2960a593c00816f309caa2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a556aebe439bdfd729903936283c3c9a6"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespaceLEARNER.html#a807843d5185e0c5005a54bf28c111c79">base_learner</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="bs_8cc.html#a556aebe439bdfd729903936283c3c9a6">bs_setup</a> (<a class="el" href="structVW_1_1config_1_1options__i.html">options_i</a> &options, <a class="el" href="structvw.html">vw</a> &all)</td></tr>
<tr class="separator:a556aebe439bdfd729903936283c3c9a6"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<h2 class="groupheader">Function Documentation</h2>
<a id="a8392dfd2ed19750f6eb14818cefd67ee"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8392dfd2ed19750f6eb14818cefd67ee">◆ </a></span>bs_predict_mean()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void bs_predict_mean </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structvw.html">vw</a> & </td>
<td class="paramname"><em>all</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structexample.html">example</a> & </td>
<td class="paramname"><em>ec</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector< double > & </td>
<td class="paramname"><em>pred_vec</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00036">36</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="accumulate_8cc_source.html#l00020">accumulate()</a>, <a class="el" href="classloss__function.html#a46f4d6f9bb6d90efdf4b0ffc5fcbba9e">loss_function::getLoss()</a>, <a class="el" href="example_8h_source.html#l00057">example::l</a>, <a class="el" href="simple__label_8h_source.html#l00014">label_data::label</a>, <a class="el" href="example_8h_source.html#l00070">example::loss</a>, <a class="el" href="global__data_8h_source.html#l00523">vw::loss</a>, <a class="el" href="example_8h_source.html#l00060">example::pred</a>, <a class="el" href="example_8h_source.html#l00045">polyprediction::scalar</a>, <a class="el" href="global__data_8h_source.html#l00375">vw::sd</a>, <a class="el" href="example_8h_source.html#l00028">polylabel::simple</a>, and <a class="el" href="example_8h_source.html#l00062">example::weight</a>.</p>
<p class="reference">Referenced by <a class="el" href="bs_8cc_source.html#l00178">predict_or_learn()</a>.</p>
<div class="fragment"><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> {</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a> = (float)<a class="code" href="accumulate_8cc.html#a7fd3d396201d4eda43e2fc55bbe66814">accumulate</a>(pred_vec.cbegin(), pred_vec.cend(), 0.0) / pred_vec.size();</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">if</span> (ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> > 0 && ec.<a class="code" href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">l</a>.<a class="code" href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">simple</a>.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a> != FLT_MAX)</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  ec.<a class="code" href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">loss</a> = all.<a class="code" href="structvw.html#a6d53e7b5144384bf3e68fd8d7566a39a">loss</a>-><a class="code" href="classloss__function.html#a46f4d6f9bb6d90efdf4b0ffc5fcbba9e">getLoss</a>(all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>, ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a>, ec.<a class="code" href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">l</a>.<a class="code" href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">simple</a>.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a>) * ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a>;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> }</div><div class="ttc" id="structvw_html_a6d53e7b5144384bf3e68fd8d7566a39a"><div class="ttname"><a href="structvw.html#a6d53e7b5144384bf3e68fd8d7566a39a">vw::loss</a></div><div class="ttdeci">loss_function * loss</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00523">global_data.h:523</a></div></div>
<div class="ttc" id="accumulate_8cc_html_a7fd3d396201d4eda43e2fc55bbe66814"><div class="ttname"><a href="accumulate_8cc.html#a7fd3d396201d4eda43e2fc55bbe66814">accumulate</a></div><div class="ttdeci">void accumulate(vw &all, parameters &weights, size_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="accumulate_8cc_source.html#l00020">accumulate.cc:20</a></div></div>
<div class="ttc" id="unionpolyprediction_html_ae29f42559acac5a2b08322a7fe887f04"><div class="ttname"><a href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">polyprediction::scalar</a></div><div class="ttdeci">float scalar</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00045">example.h:45</a></div></div>
<div class="ttc" id="structlabel__data_html_a09103f622b965d8c14f0047b53ba7fe1"><div class="ttname"><a href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label_data::label</a></div><div class="ttdeci">float label</div><div class="ttdef"><b>Definition:</b> <a href="simple__label_8h_source.html#l00014">simple_label.h:14</a></div></div>
<div class="ttc" id="unionpolylabel_html_a80ff268cb4e29afddaac58174d316297"><div class="ttname"><a href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">polylabel::simple</a></div><div class="ttdeci">label_data simple</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00028">example.h:28</a></div></div>
<div class="ttc" id="classloss__function_html_a46f4d6f9bb6d90efdf4b0ffc5fcbba9e"><div class="ttname"><a href="classloss__function.html#a46f4d6f9bb6d90efdf4b0ffc5fcbba9e">loss_function::getLoss</a></div><div class="ttdeci">virtual float getLoss(shared_data *, float prediction, float label)=0</div></div>
<div class="ttc" id="structvw_html_aada16c220b8d3eaf62aaee86168dde5e"><div class="ttname"><a href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">vw::sd</a></div><div class="ttdeci">shared_data * sd</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00375">global_data.h:375</a></div></div>
<div class="ttc" id="structexample_html_aec82f8fecc8ad2a13e54ecf83dfbc5c9"><div class="ttname"><a href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">example::loss</a></div><div class="ttdeci">float loss</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00070">example.h:70</a></div></div>
<div class="ttc" id="structexample_html_a0c87f6e82d9c95ae42158bdbdab3acf5"><div class="ttname"><a href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">example::l</a></div><div class="ttdeci">polylabel l</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00057">example.h:57</a></div></div>
<div class="ttc" id="structexample_html_ad1477e890371ed8253f1953d4190ba49"><div class="ttname"><a href="structexample.html#ad1477e890371ed8253f1953d4190ba49">example::pred</a></div><div class="ttdeci">polyprediction pred</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00060">example.h:60</a></div></div>
<div class="ttc" id="structexample_html_a403be75fc4fdd058e4f7c1baf39be11a"><div class="ttname"><a href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">example::weight</a></div><div class="ttdeci">float weight</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00062">example.h:62</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a id="a4fb086d2b446da2c3b9537066aa7ae43"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4fb086d2b446da2c3b9537066aa7ae43">◆ </a></span>bs_predict_vote()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void bs_predict_vote </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structexample.html">example</a> & </td>
<td class="paramname"><em>ec</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">std::vector< double > & </td>
<td class="paramname"><em>pred_vec</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00043">43</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="cache_8cc_source.html#l00040">f</a>, <a class="el" href="example_8h_source.html#l00057">example::l</a>, <a class="el" href="simple__label_8h_source.html#l00014">label_data::label</a>, <a class="el" href="example_8h_source.html#l00070">example::loss</a>, <a class="el" href="example_8h_source.html#l00060">example::pred</a>, <a class="el" href="example_8h_source.html#l00045">polyprediction::scalar</a>, <a class="el" href="example_8h_source.html#l00028">polylabel::simple</a>, and <a class="el" href="example_8h_source.html#l00062">example::weight</a>.</p>
<p class="reference">Referenced by <a class="el" href="bs_8cc_source.html#l00178">predict_or_learn()</a>.</p>
<div class="fragment"><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>  <span class="comment">// majority vote in linear time</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> counter = 0;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">int</span> current_label = 1, init_label = 1;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// float sum_labels = 0; // uncomment for: "avg on votes" and getLoss()</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">bool</span> majority_found = <span class="keyword">false</span>;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">bool</span> multivote_detected = <span class="keyword">false</span>; <span class="comment">// distinct(votes)>2: used to skip part of the algorithm</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">auto</span> pred_vec_sz = pred_vec.size();</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">int</span>* pred_vec_int = <span class="keyword">new</span> <span class="keywordtype">int</span>[pred_vec_sz];</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">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < pred_vec_sz; i++)</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  pred_vec_int[i] = (int)floor(</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  pred_vec[i] + 0.5); <span class="comment">// could be added: link(), min_label/max_label, cutoff between true/false for binary</span></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>  <span class="keywordflow">if</span> (!multivote_detected) <span class="comment">// distinct(votes)>2 detection bloc</span></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="keywordflow">if</span> (i == 0)</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  init_label = pred_vec_int[i];</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  current_label = pred_vec_int[i];</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  }</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (init_label != current_label && pred_vec_int[i] != current_label && pred_vec_int[i] != init_label)</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  multivote_detected = <span class="keyword">true</span>; <span class="comment">// more than 2 distinct votes detected</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (counter == 0)</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  counter = 1;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  current_label = pred_vec_int[i];</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">else</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>  <span class="keywordflow">if</span> (pred_vec_int[i] == current_label)</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  counter++;</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  counter--;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (counter > 0 && multivote_detected) <span class="comment">// remove this condition for: "avg on votes" and getLoss()</span></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>  counter = 0;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < pred_vec.size(); i++)</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span> (pred_vec_int[i] == current_label)</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  counter++;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// sum_labels += pred_vec[i]; // uncomment for: "avg on votes" and getLoss()</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (counter * 2 > pred_vec.size())</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  majority_found = <span class="keyword">true</span>;</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> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (multivote_detected && !majority_found) <span class="comment">// then find most frequent element - if tie: smallest tie label</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>  std::sort(pred_vec_int, pred_vec_int + pred_vec.size());</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">int</span> tmp_label = pred_vec_int[0];</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  counter = 1;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 1, temp_count = 1; i < pred_vec.size(); i++)</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>  <span class="keywordflow">if</span> (tmp_label == pred_vec_int[i])</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  temp_count++;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">else</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="keywordflow">if</span> (temp_count > counter)</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  {</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  current_label = tmp_label;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  counter = temp_count;</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>  tmp_label = pred_vec_int[i];</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  temp_count = 1;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">/* uncomment for: "avg on votes" and getLoss()</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> sum_labels = 0;</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> for(unsigned int i=0; i<pred_vec.size(); i++)</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> if(pred_vec_int[i] == current_label)</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> sum_labels += pred_vec[i]; */</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="comment">// TODO: unique_ptr would also handle exception case</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">delete</span>[] pred_vec_int;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// ld.prediction = sum_labels/(float)counter; //replace line below for: "avg on votes" and getLoss()</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a> = (float)current_label;</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// ec.loss = all.loss->getLoss(all.sd, ld.prediction, ld.label) * ec.weight; //replace line below for: "avg on votes"</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// and getLoss()</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  ec.<a class="code" href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">loss</a> = ((ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a> == ec.<a class="code" href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">l</a>.<a class="code" href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">simple</a>.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a>) ? 0.<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a> : 1.<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>) * ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a>;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> }</div><div class="ttc" id="unionpolyprediction_html_ae29f42559acac5a2b08322a7fe887f04"><div class="ttname"><a href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">polyprediction::scalar</a></div><div class="ttdeci">float scalar</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00045">example.h:45</a></div></div>
<div class="ttc" id="structlabel__data_html_a09103f622b965d8c14f0047b53ba7fe1"><div class="ttname"><a href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label_data::label</a></div><div class="ttdeci">float label</div><div class="ttdef"><b>Definition:</b> <a href="simple__label_8h_source.html#l00014">simple_label.h:14</a></div></div>
<div class="ttc" id="unionpolylabel_html_a80ff268cb4e29afddaac58174d316297"><div class="ttname"><a href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">polylabel::simple</a></div><div class="ttdeci">label_data simple</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00028">example.h:28</a></div></div>
<div class="ttc" id="structexample_html_aec82f8fecc8ad2a13e54ecf83dfbc5c9"><div class="ttname"><a href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">example::loss</a></div><div class="ttdeci">float loss</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00070">example.h:70</a></div></div>
<div class="ttc" id="structexample_html_a0c87f6e82d9c95ae42158bdbdab3acf5"><div class="ttname"><a href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">example::l</a></div><div class="ttdeci">polylabel l</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00057">example.h:57</a></div></div>
<div class="ttc" id="structexample_html_ad1477e890371ed8253f1953d4190ba49"><div class="ttname"><a href="structexample.html#ad1477e890371ed8253f1953d4190ba49">example::pred</a></div><div class="ttdeci">polyprediction pred</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00060">example.h:60</a></div></div>
<div class="ttc" id="structexample_html_a403be75fc4fdd058e4f7c1baf39be11a"><div class="ttname"><a href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">example::weight</a></div><div class="ttdeci">float weight</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00062">example.h:62</a></div></div>
<div class="ttc" id="cache_8cc_html_af900396d7b72ff2a7002e8befe8cf8f1"><div class="ttname"><a href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a></div><div class="ttdeci">float f</div><div class="ttdef"><b>Definition:</b> <a href="cache_8cc_source.html#l00040">cache.cc:40</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a556aebe439bdfd729903936283c3c9a6">◆ </a></span>bs_setup()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname"><a class="el" href="namespaceLEARNER.html#a807843d5185e0c5005a54bf28c111c79">base_learner</a>* bs_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structVW_1_1config_1_1options__i.html">options_i</a> & </td>
<td class="paramname"><em>options</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structvw.html">vw</a> & </td>
<td class="paramname"><em>all</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00231">231</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="options_8h_source.html#l00090">VW::config::option_group_definition::add()</a>, <a class="el" href="kernel__svm_8cc_source.html#l00546">add()</a>, <a class="el" href="structVW_1_1config_1_1options__i.html#a93c0de6c3ad57f6fb57441af2c908ba5">VW::config::options_i::add_and_parse()</a>, <a class="el" href="learner_8h_source.html#l00476">LEARNER::as_singleline()</a>, <a class="el" href="bs_8h_source.html#l00008">BS_TYPE_MEAN</a>, <a class="el" href="bs_8h_source.html#l00009">BS_TYPE_VOTE</a>, <a class="el" href="bs_8cc_source.html#l00225">finish_example()</a>, <a class="el" href="global__data_8h_source.html#l00553">vw::get_random_state()</a>, <a class="el" href="learner_8h_source.html#l00369">LEARNER::init_learner()</a>, <a class="el" href="learner_8h_source.html#l00462">LEARNER::make_base()</a>, <a class="el" href="options_8h_source.html#l00080">VW::config::make_option()</a>, <a class="el" href="learner_8h_source.html#l00307">LEARNER::learner< T, E >::set_finish_example()</a>, <a class="el" href="parse__args_8cc_source.html#l01222">setup_base()</a>, and <a class="el" href="structVW_1_1config_1_1options__i.html#ab5171ac33158fca4580d3f0658c4929e">VW::config::options_i::was_supplied()</a>.</p>
<p class="reference">Referenced by <a class="el" href="parse__args_8cc_source.html#l01234">parse_reductions()</a>.</p>
<div class="fragment"><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> {</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">auto</span> data = scoped_calloc_or_throw<bs>();</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  std::string type_string(<span class="stringliteral">"mean"</span>);</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <a class="code" href="structVW_1_1config_1_1option__group__definition.html">option_group_definition</a> new_options(<span class="stringliteral">"Bootstrap"</span>);</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  new_options.add(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"bootstrap"</span>, data->B).keep().help(<span class="stringliteral">"k-way bootstrap by online importance resampling"</span>))</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  .<a class="code" href="kernel__svm_8cc.html#a907b9ad55bf6f8e61a6385bc9599fc0f">add</a>(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"bs_type"</span>, type_string).keep().help(<span class="stringliteral">"prediction type {mean,vote}"</span>));</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  options.<a class="code" href="structVW_1_1config_1_1options__i.html#a93c0de6c3ad57f6fb57441af2c908ba5">add_and_parse</a>(new_options);</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">if</span> (!options.<a class="code" href="structVW_1_1config_1_1options__i.html#ab5171ac33158fca4580d3f0658c4929e">was_supplied</a>(<span class="stringliteral">"bootstrap"</span>))</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  data->ub = FLT_MAX;</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  data->lb = -FLT_MAX;</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (options.<a class="code" href="structVW_1_1config_1_1options__i.html#ab5171ac33158fca4580d3f0658c4929e">was_supplied</a>(<span class="stringliteral">"bs_type"</span>))</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  {</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (type_string == <span class="stringliteral">"mean"</span>)</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  data->bs_type = <a class="code" href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a>;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type_string == <span class="stringliteral">"vote"</span>)</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  data->bs_type = <a class="code" href="bs_8h.html#a907800596f3b54d22867347fbba61da4">BS_TYPE_VOTE</a>;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  {</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::cerr << <span class="stringliteral">"warning: bs_type must be in {'mean','vote'}; resetting to mean."</span> << std::endl;</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  data->bs_type = <a class="code" href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a>;</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">else</span> <span class="comment">// by default use mean</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  data->bs_type = <a class="code" href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a>;</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  data->pred_vec = <span class="keyword">new</span> std::vector<double>();</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  data->pred_vec->reserve(data->B);</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  data->all = &all;</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  data->_random_state = all.<a class="code" href="structvw.html#a30bca3f2116b0b7db82d60c76467f6c4">get_random_state</a>();</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="structLEARNER_1_1learner.html">learner<bs, example></a>& l = <a class="code" href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">init_learner</a>(</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  data, <a class="code" href="namespaceLEARNER.html#abd71c87941b752738319b3d1ed64fe47">as_singleline</a>(<a class="code" href="parse__args_8cc.html#a34c806099b7857a0ffc630bc8142beba">setup_base</a>(options, all)), predict_or_learn<true>, predict_or_learn<false>, data->B);</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  l.<a class="code" href="structLEARNER_1_1learner.html#a459cdbfe2232f11e6c73933961af97e1">set_finish_example</a>(<a class="code" href="bs_8cc.html#aba9b80c92e2960a593c00816f309caa2">finish_example</a>);</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceLEARNER.html#abcf6bdc2fa5e38928c33212e20dbbd74">make_base</a>(l);</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> }</div><div class="ttc" id="namespaceLEARNER_html_abcf6bdc2fa5e38928c33212e20dbbd74"><div class="ttname"><a href="namespaceLEARNER.html#abcf6bdc2fa5e38928c33212e20dbbd74">LEARNER::make_base</a></div><div class="ttdeci">base_learner * make_base(learner< T, E > &base)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00462">learner.h:462</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1option__group__definition_html"><div class="ttname"><a href="structVW_1_1config_1_1option__group__definition.html">VW::config::option_group_definition</a></div><div class="ttdef"><b>Definition:</b> <a href="options_8h_source.html#l00085">options.h:85</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1options__i_html_a93c0de6c3ad57f6fb57441af2c908ba5"><div class="ttname"><a href="structVW_1_1config_1_1options__i.html#a93c0de6c3ad57f6fb57441af2c908ba5">VW::config::options_i::add_and_parse</a></div><div class="ttdeci">virtual void add_and_parse(const option_group_definition &group)=0</div></div>
<div class="ttc" id="structLEARNER_1_1learner_html"><div class="ttname"><a href="structLEARNER_1_1learner.html">LEARNER::learner</a></div><div class="ttdef"><b>Definition:</b> <a href="cb__explore_8h_source.html#l00011">cb_explore.h:11</a></div></div>
<div class="ttc" id="structvw_html_a30bca3f2116b0b7db82d60c76467f6c4"><div class="ttname"><a href="structvw.html#a30bca3f2116b0b7db82d60c76467f6c4">vw::get_random_state</a></div><div class="ttdeci">std::shared_ptr< rand_state > get_random_state()</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00553">global_data.h:553</a></div></div>
<div class="ttc" id="namespaceLEARNER_html_abd71c87941b752738319b3d1ed64fe47"><div class="ttname"><a href="namespaceLEARNER.html#abd71c87941b752738319b3d1ed64fe47">LEARNER::as_singleline</a></div><div class="ttdeci">single_learner * as_singleline(learner< T, E > *l)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00476">learner.h:476</a></div></div>
<div class="ttc" id="structLEARNER_1_1learner_html_a459cdbfe2232f11e6c73933961af97e1"><div class="ttname"><a href="structLEARNER_1_1learner.html#a459cdbfe2232f11e6c73933961af97e1">LEARNER::learner::set_finish_example</a></div><div class="ttdeci">void set_finish_example(void(*f)(vw &all, T &, E &))</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00307">learner.h:307</a></div></div>
<div class="ttc" id="namespaceLEARNER_html_a46de7ca84ed37d7b45dc7db64420b978"><div class="ttname"><a href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">LEARNER::init_learner</a></div><div class="ttdeci">learner< T, E > & init_learner(free_ptr< T > &dat, L *base, void(*learn)(T &, L &, E &), void(*predict)(T &, L &, E &), size_t ws, prediction_type::prediction_type_t pred_type)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00369">learner.h:369</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1options__i_html_ab5171ac33158fca4580d3f0658c4929e"><div class="ttname"><a href="structVW_1_1config_1_1options__i.html#ab5171ac33158fca4580d3f0658c4929e">VW::config::options_i::was_supplied</a></div><div class="ttdeci">virtual bool was_supplied(const std::string &key)=0</div></div>
<div class="ttc" id="bs_8h_html_a907800596f3b54d22867347fbba61da4"><div class="ttname"><a href="bs_8h.html#a907800596f3b54d22867347fbba61da4">BS_TYPE_VOTE</a></div><div class="ttdeci">#define BS_TYPE_VOTE</div><div class="ttdef"><b>Definition:</b> <a href="bs_8h_source.html#l00009">bs.h:9</a></div></div>
<div class="ttc" id="kernel__svm_8cc_html_a907b9ad55bf6f8e61a6385bc9599fc0f"><div class="ttname"><a href="kernel__svm_8cc.html#a907b9ad55bf6f8e61a6385bc9599fc0f">add</a></div><div class="ttdeci">int add(svm_params &params, svm_example *fec)</div><div class="ttdef"><b>Definition:</b> <a href="kernel__svm_8cc_source.html#l00546">kernel_svm.cc:546</a></div></div>
<div class="ttc" id="namespaceVW_1_1config_html_ae768389a49d24d07215612b2f824d520"><div class="ttname"><a href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">VW::config::make_option</a></div><div class="ttdeci">typed_option< T > make_option(std::string name, T &location)</div><div class="ttdef"><b>Definition:</b> <a href="options_8h_source.html#l00080">options.h:80</a></div></div>
<div class="ttc" id="bs_8cc_html_aba9b80c92e2960a593c00816f309caa2"><div class="ttname"><a href="bs_8cc.html#aba9b80c92e2960a593c00816f309caa2">finish_example</a></div><div class="ttdeci">void finish_example(vw &all, bs &d, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00225">bs.cc:225</a></div></div>
<div class="ttc" id="bs_8h_html_a8c0d8475abdfcdaf21a68c4b2945f3de"><div class="ttname"><a href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a></div><div class="ttdeci">#define BS_TYPE_MEAN</div><div class="ttdef"><b>Definition:</b> <a href="bs_8h_source.html#l00008">bs.h:8</a></div></div>
<div class="ttc" id="parse__args_8cc_html_a34c806099b7857a0ffc630bc8142beba"><div class="ttname"><a href="parse__args_8cc.html#a34c806099b7857a0ffc630bc8142beba">setup_base</a></div><div class="ttdeci">LEARNER::base_learner * setup_base(options_i &options, vw &all)</div><div class="ttdef"><b>Definition:</b> <a href="parse__args_8cc_source.html#l01222">parse_args.cc:1222</a></div></div>
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<a id="aba9b80c92e2960a593c00816f309caa2"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aba9b80c92e2960a593c00816f309caa2">◆ </a></span>finish_example()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void finish_example </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structvw.html">vw</a> & </td>
<td class="paramname"><em>all</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structbs.html">bs</a> & </td>
<td class="paramname"><em>d</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structexample.html">example</a> & </td>
<td class="paramname"><em>ec</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00225">225</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="parser_8cc_source.html#l00881">VW::finish_example()</a>, and <a class="el" href="bs_8cc_source.html#l00151">output_example()</a>.</p>
<p class="reference">Referenced by <a class="el" href="bs_8cc_source.html#l00231">bs_setup()</a>.</p>
<div class="fragment"><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> {</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="bs_8cc.html#a8a721718f8172b3699825bfe4e512f12">output_example</a>(all, d, ec);</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <a class="code" href="namespaceVW.html#a67d2e194f1865809a14c8f3899497c4c">VW::finish_example</a>(all, ec);</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> }</div><div class="ttc" id="bs_8cc_html_a8a721718f8172b3699825bfe4e512f12"><div class="ttname"><a href="bs_8cc.html#a8a721718f8172b3699825bfe4e512f12">output_example</a></div><div class="ttdeci">void output_example(vw &all, bs &d, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00151">bs.cc:151</a></div></div>
<div class="ttc" id="namespaceVW_html_a67d2e194f1865809a14c8f3899497c4c"><div class="ttname"><a href="namespaceVW.html#a67d2e194f1865809a14c8f3899497c4c">VW::finish_example</a></div><div class="ttdeci">void finish_example(vw &, example &)</div><div class="ttdef"><b>Definition:</b> <a href="parser_8cc_source.html#l00881">parser.cc:881</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a8a721718f8172b3699825bfe4e512f12">◆ </a></span>output_example()</h2>
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<td class="memname">void output_example </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structvw.html">vw</a> & </td>
<td class="paramname"><em>all</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structbs.html">bs</a> & </td>
<td class="paramname"><em>d</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structexample.html">example</a> & </td>
<td class="paramname"><em>ec</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00151">151</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="v__array_8h_source.html#l00059">v_array< T >::empty()</a>, <a class="el" href="global__data_8h_source.html#l00518">vw::final_prediction_sink</a>, <a class="el" href="example_8h_source.html#l00057">example::l</a>, <a class="el" href="simple__label_8h_source.html#l00014">label_data::label</a>, <a class="el" href="bs_8cc_source.html#l00027">bs::lb</a>, <a class="el" href="example_8h_source.html#l00070">example::loss</a>, <a class="el" href="example_8h_source.html#l00067">example::num_features</a>, <a class="el" href="example_8h_source.html#l00060">example::pred</a>, <a class="el" href="bs_8cc_source.html#l00029">bs::pred_vec</a>, <a class="el" href="bs_8cc_source.html#l00136">print_result()</a>, <a class="el" href="cb_8cc_source.html#l00180">CB::print_update()</a>, <a class="el" href="example_8h_source.html#l00045">polyprediction::scalar</a>, <a class="el" href="global__data_8h_source.html#l00375">vw::sd</a>, <a class="el" href="example_8h_source.html#l00028">polylabel::simple</a>, <a class="el" href="example_8h_source.html#l00063">example::tag</a>, <a class="el" href="example_8h_source.html#l00076">example::test_only</a>, <a class="el" href="bs_8cc_source.html#l00028">bs::ub</a>, <a class="el" href="global__data_8h_source.html#l00190">shared_data::update()</a>, <a class="el" href="example_8h_source.html#l00062">example::weight</a>, and <a class="el" href="global__data_8h_source.html#l00144">shared_data::weighted_labels</a>.</p>
<p class="reference">Referenced by <a class="el" href="bs_8cc_source.html#l00225">finish_example()</a>.</p>
<div class="fragment"><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="structlabel__data.html">label_data</a>& ld = ec.<a class="code" href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">l</a>.<a class="code" href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">simple</a>;</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#ad3b0fc9176c689eb63bf255499223c62">update</a>(ec.<a class="code" href="structexample.html#aafed65a0405faa864c87b8b75d39ef4d">test_only</a>, ld.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a> != FLT_MAX, ec.<a class="code" href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">loss</a>, ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a>, ec.<a class="code" href="structexample.html#a35f3ec2680a21f971548cf5bb9f1fda0">num_features</a>);</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (ld.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a> != FLT_MAX && !ec.<a class="code" href="structexample.html#aafed65a0405faa864c87b8b75d39ef4d">test_only</a>)</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#a462fe3c516f5d87de08862c7d7a9136d">weighted_labels</a> += ((double)ld.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a>) * ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a>;</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="keywordflow">if</span> (!all.<a class="code" href="structvw.html#a0e33c9d541494dd47ffb4e35c82fb982">final_prediction_sink</a>.<a class="code" href="structv__array.html#aa92ed3d81ab2c69e0d48d4cb27421472">empty</a>()) <span class="comment">// get confidence interval only when printing out predictions</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>  d.<a class="code" href="structbs.html#a3b48b26248b6b41550ba5fea01984cf0">lb</a> = FLT_MAX;</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  d.<a class="code" href="structbs.html#a5acb2ead568d0003ae80b3204576c7d2">ub</a> = -FLT_MAX;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">for</span> (<span class="keywordtype">double</span> v : *d.<a class="code" href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">pred_vec</a>)</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  {</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">if</span> (v > d.<a class="code" href="structbs.html#a5acb2ead568d0003ae80b3204576c7d2">ub</a>)</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  d.<a class="code" href="structbs.html#a5acb2ead568d0003ae80b3204576c7d2">ub</a> = (float)v;</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span> (v < d.<a class="code" href="structbs.html#a3b48b26248b6b41550ba5fea01984cf0">lb</a>)</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  d.<a class="code" href="structbs.html#a3b48b26248b6b41550ba5fea01984cf0">lb</a> = (float)v;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> sink : all.<a class="code" href="structvw.html#a0e33c9d541494dd47ffb4e35c82fb982">final_prediction_sink</a>) <a class="code" href="bs_8cc.html#a4bece77a15f02909b0c3d134ddf986e3">print_result</a>(sink, ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a>, ec.<a class="code" href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">tag</a>, d.<a class="code" href="structbs.html#a3b48b26248b6b41550ba5fea01984cf0">lb</a>, d.<a class="code" href="structbs.html#a5acb2ead568d0003ae80b3204576c7d2">ub</a>);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <a class="code" href="namespaceCB.html#a4d77d033fd0181408b6071dcdd67c32c">print_update</a>(all, ec);</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> }</div><div class="ttc" id="structbs_html_a5acb2ead568d0003ae80b3204576c7d2"><div class="ttname"><a href="structbs.html#a5acb2ead568d0003ae80b3204576c7d2">bs::ub</a></div><div class="ttdeci">float ub</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00028">bs.cc:28</a></div></div>
<div class="ttc" id="structexample_html_ae05e98faef8389156ebb6d8f823ca378"><div class="ttname"><a href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">example::tag</a></div><div class="ttdeci">v_array< char > tag</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00063">example.h:63</a></div></div>
<div class="ttc" id="unionpolyprediction_html_ae29f42559acac5a2b08322a7fe887f04"><div class="ttname"><a href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">polyprediction::scalar</a></div><div class="ttdeci">float scalar</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00045">example.h:45</a></div></div>
<div class="ttc" id="structvw_html_a0e33c9d541494dd47ffb4e35c82fb982"><div class="ttname"><a href="structvw.html#a0e33c9d541494dd47ffb4e35c82fb982">vw::final_prediction_sink</a></div><div class="ttdeci">v_array< int > final_prediction_sink</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00518">global_data.h:518</a></div></div>
<div class="ttc" id="structlabel__data_html_a09103f622b965d8c14f0047b53ba7fe1"><div class="ttname"><a href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label_data::label</a></div><div class="ttdeci">float label</div><div class="ttdef"><b>Definition:</b> <a href="simple__label_8h_source.html#l00014">simple_label.h:14</a></div></div>
<div class="ttc" id="unionpolylabel_html_a80ff268cb4e29afddaac58174d316297"><div class="ttname"><a href="unionpolylabel.html#a80ff268cb4e29afddaac58174d316297">polylabel::simple</a></div><div class="ttdeci">label_data simple</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00028">example.h:28</a></div></div>
<div class="ttc" id="namespaceCB_html_a4d77d033fd0181408b6071dcdd67c32c"><div class="ttname"><a href="namespaceCB.html#a4d77d033fd0181408b6071dcdd67c32c">CB::print_update</a></div><div class="ttdeci">void print_update(vw &all, bool is_test, example &ec, multi_ex *ec_seq, bool action_scores)</div><div class="ttdef"><b>Definition:</b> <a href="cb_8cc_source.html#l00180">cb.cc:180</a></div></div>
<div class="ttc" id="structvw_html_aada16c220b8d3eaf62aaee86168dde5e"><div class="ttname"><a href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">vw::sd</a></div><div class="ttdeci">shared_data * sd</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00375">global_data.h:375</a></div></div>
<div class="ttc" id="structlabel__data_html"><div class="ttname"><a href="structlabel__data.html">label_data</a></div><div class="ttdef"><b>Definition:</b> <a href="simple__label_8h_source.html#l00012">simple_label.h:12</a></div></div>
<div class="ttc" id="structexample_html_a35f3ec2680a21f971548cf5bb9f1fda0"><div class="ttname"><a href="structexample.html#a35f3ec2680a21f971548cf5bb9f1fda0">example::num_features</a></div><div class="ttdeci">size_t num_features</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00067">example.h:67</a></div></div>
<div class="ttc" id="structshared__data_html_a462fe3c516f5d87de08862c7d7a9136d"><div class="ttname"><a href="structshared__data.html#a462fe3c516f5d87de08862c7d7a9136d">shared_data::weighted_labels</a></div><div class="ttdeci">double weighted_labels</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00144">global_data.h:144</a></div></div>
<div class="ttc" id="structshared__data_html_ad3b0fc9176c689eb63bf255499223c62"><div class="ttname"><a href="structshared__data.html#ad3b0fc9176c689eb63bf255499223c62">shared_data::update</a></div><div class="ttdeci">void update(bool test_example, bool labeled_example, float loss, float weight, size_t num_features)</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00190">global_data.h:190</a></div></div>
<div class="ttc" id="structexample_html_aec82f8fecc8ad2a13e54ecf83dfbc5c9"><div class="ttname"><a href="structexample.html#aec82f8fecc8ad2a13e54ecf83dfbc5c9">example::loss</a></div><div class="ttdeci">float loss</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00070">example.h:70</a></div></div>
<div class="ttc" id="structexample_html_a0c87f6e82d9c95ae42158bdbdab3acf5"><div class="ttname"><a href="structexample.html#a0c87f6e82d9c95ae42158bdbdab3acf5">example::l</a></div><div class="ttdeci">polylabel l</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00057">example.h:57</a></div></div>
<div class="ttc" id="bs_8cc_html_a4bece77a15f02909b0c3d134ddf986e3"><div class="ttname"><a href="bs_8cc.html#a4bece77a15f02909b0c3d134ddf986e3">print_result</a></div><div class="ttdeci">void print_result(int f, float res, v_array< char > tag, float lb, float ub)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00136">bs.cc:136</a></div></div>
<div class="ttc" id="structv__array_html_aa92ed3d81ab2c69e0d48d4cb27421472"><div class="ttname"><a href="structv__array.html#aa92ed3d81ab2c69e0d48d4cb27421472">v_array::empty</a></div><div class="ttdeci">bool empty() const</div><div class="ttdef"><b>Definition:</b> <a href="v__array_8h_source.html#l00059">v_array.h:59</a></div></div>
<div class="ttc" id="structbs_html_a3b48b26248b6b41550ba5fea01984cf0"><div class="ttname"><a href="structbs.html#a3b48b26248b6b41550ba5fea01984cf0">bs::lb</a></div><div class="ttdeci">float lb</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00027">bs.cc:27</a></div></div>
<div class="ttc" id="structexample_html_ad1477e890371ed8253f1953d4190ba49"><div class="ttname"><a href="structexample.html#ad1477e890371ed8253f1953d4190ba49">example::pred</a></div><div class="ttdeci">polyprediction pred</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00060">example.h:60</a></div></div>
<div class="ttc" id="structexample_html_a403be75fc4fdd058e4f7c1baf39be11a"><div class="ttname"><a href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">example::weight</a></div><div class="ttdeci">float weight</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00062">example.h:62</a></div></div>
<div class="ttc" id="structbs_html_abf0d7010058fb6c138274bdb6460fa50"><div class="ttname"><a href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">bs::pred_vec</a></div><div class="ttdeci">std::vector< double > * pred_vec</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00029">bs.cc:29</a></div></div>
<div class="ttc" id="structexample_html_aafed65a0405faa864c87b8b75d39ef4d"><div class="ttname"><a href="structexample.html#aafed65a0405faa864c87b8b75d39ef4d">example::test_only</a></div><div class="ttdeci">bool test_only</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00076">example.h:76</a></div></div>
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<a id="a122ec98ed8ba1726a02465ce5322d60d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a122ec98ed8ba1726a02465ce5322d60d">◆ </a></span>predict_or_learn()</h2>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template<bool is_learn> </div>
<table class="memname">
<tr>
<td class="memname">void predict_or_learn </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structbs.html">bs</a> & </td>
<td class="paramname"><em>d</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="namespaceLEARNER.html#a43eb8cec4287b4ad02967d7012bbf0a3">single_learner</a> & </td>
<td class="paramname"><em>base</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structexample.html">example</a> & </td>
<td class="paramname"><em>ec</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00178">178</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="bs_8cc_source.html#l00031">bs::_random_state</a>, <a class="el" href="bs_8cc_source.html#l00030">bs::all</a>, <a class="el" href="bs_8cc_source.html#l00025">bs::B</a>, <a class="el" href="bs_8cc_source.html#l00036">bs_predict_mean()</a>, <a class="el" href="bs_8cc_source.html#l00043">bs_predict_vote()</a>, <a class="el" href="bs_8cc_source.html#l00026">bs::bs_type</a>, <a class="el" href="bs_8h_source.html#l00008">BS_TYPE_MEAN</a>, <a class="el" href="bs_8h_source.html#l00009">BS_TYPE_VOTE</a>, <a class="el" href="learner_8h_source.html#l00160">LEARNER::learner< T, E >::learn()</a>, <a class="el" href="example_8h_source.html#l00068">example::partial_prediction</a>, <a class="el" href="example_8h_source.html#l00060">example::pred</a>, <a class="el" href="bs_8cc_source.html#l00029">bs::pred_vec</a>, <a class="el" href="learner_8h_source.html#l00169">LEARNER::learner< T, E >::predict()</a>, <a class="el" href="global__data_8h_source.html#l00522">vw::print_text</a>, <a class="el" href="global__data_8h_source.html#l00519">vw::raw_prediction</a>, <a class="el" href="example_8h_source.html#l00045">polyprediction::scalar</a>, <a class="el" href="example_8h_source.html#l00063">example::tag</a>, <a class="el" href="vw__exception_8h_source.html#l00181">THROW</a>, <a class="el" href="example_8h_source.html#l00062">example::weight</a>, and <a class="el" href="bs_8h_source.html#l00017">BS::weight_gen()</a>.</p>
<div class="fragment"><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> {</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="structvw.html">vw</a>& all = *d.<a class="code" href="structbs.html#af57a9d22cee28d83e50e9c18b36b72cc">all</a>;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">bool</span> shouldOutput = all.<a class="code" href="structvw.html#a779813620c14d314518d7244ab746fbb">raw_prediction</a> > 0;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordtype">float</span> weight_temp = ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a>;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  std::stringstream outputStringStream;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  d.<a class="code" href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">pred_vec</a>->clear();</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 1; i <= d.<a class="code" href="structbs.html#a001c75f2548c1f97e1fb1769689a6614">B</a>; i++)</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> = weight_temp * (float)<a class="code" href="namespaceBS.html#a3f19f4a11eca7bcb633823c1ac1e057a">BS::weight_gen</a>(d.<a class="code" href="structbs.html#a814cef13fb8be4f6fa2eca3ff8765573">_random_state</a>);</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (is_learn)</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a9984332080a6ee4730a5762e9be3a3f6">learn</a>(ec, i - 1);</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a8b4f75763c0ec9a26eb5255780e782a8">predict</a>(ec, i - 1);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  d.<a class="code" href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">pred_vec</a>->push_back(ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a>);</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">if</span> (shouldOutput)</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">if</span> (i > 1)</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  outputStringStream << <span class="charliteral">' '</span>;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  outputStringStream << i << <span class="charliteral">':'</span> << ec.<a class="code" href="structexample.html#a3e4e427253321a8867a27827a3dd59c1">partial_prediction</a>;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  }</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> = weight_temp;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">switch</span> (d.<a class="code" href="structbs.html#ab37112a08d1d85816dd71678df1c1f8b">bs_type</a>)</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  {</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">case</span> <a class="code" href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a>:</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <a class="code" href="bs_8cc.html#a8392dfd2ed19750f6eb14818cefd67ee">bs_predict_mean</a>(all, ec, *d.<a class="code" href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">pred_vec</a>);</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">case</span> <a class="code" href="bs_8h.html#a907800596f3b54d22867347fbba61da4">BS_TYPE_VOTE</a>:</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <a class="code" href="bs_8cc.html#a4fb086d2b446da2c3b9537066aa7ae43">bs_predict_vote</a>(ec, *d.<a class="code" href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">pred_vec</a>);</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">default</span>:</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="vw__exception_8h.html#a6418ba1768107875abafe9a0b6b8b2ad">THROW</a>(<span class="stringliteral">"Unknown bs_type specified: "</span> << d.<a class="code" href="structbs.html#ab37112a08d1d85816dd71678df1c1f8b">bs_type</a>);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">if</span> (shouldOutput)</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  all.<a class="code" href="structvw.html#a9525bfa2fbc30109b419bd8f418a8a4b">print_text</a>(all.<a class="code" href="structvw.html#a779813620c14d314518d7244ab746fbb">raw_prediction</a>, outputStringStream.str(), ec.<a class="code" href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">tag</a>);</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> }</div><div class="ttc" id="structexample_html_ae05e98faef8389156ebb6d8f823ca378"><div class="ttname"><a href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">example::tag</a></div><div class="ttdeci">v_array< char > tag</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00063">example.h:63</a></div></div>
<div class="ttc" id="structvw_html_a779813620c14d314518d7244ab746fbb"><div class="ttname"><a href="structvw.html#a779813620c14d314518d7244ab746fbb">vw::raw_prediction</a></div><div class="ttdeci">int raw_prediction</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00519">global_data.h:519</a></div></div>
<div class="ttc" id="structLEARNER_1_1learner_html_a8b4f75763c0ec9a26eb5255780e782a8"><div class="ttname"><a href="structLEARNER_1_1learner.html#a8b4f75763c0ec9a26eb5255780e782a8">LEARNER::learner::predict</a></div><div class="ttdeci">void predict(E &ec, size_t i=0)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00169">learner.h:169</a></div></div>
<div class="ttc" id="namespaceBS_html_a3f19f4a11eca7bcb633823c1ac1e057a"><div class="ttname"><a href="namespaceBS.html#a3f19f4a11eca7bcb633823c1ac1e057a">BS::weight_gen</a></div><div class="ttdeci">uint32_t weight_gen(std::shared_ptr< rand_state > &state)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8h_source.html#l00017">bs.h:17</a></div></div>
<div class="ttc" id="structbs_html_ab37112a08d1d85816dd71678df1c1f8b"><div class="ttname"><a href="structbs.html#ab37112a08d1d85816dd71678df1c1f8b">bs::bs_type</a></div><div class="ttdeci">size_t bs_type</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00026">bs.cc:26</a></div></div>
<div class="ttc" id="unionpolyprediction_html_ae29f42559acac5a2b08322a7fe887f04"><div class="ttname"><a href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">polyprediction::scalar</a></div><div class="ttdeci">float scalar</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00045">example.h:45</a></div></div>
<div class="ttc" id="structbs_html_af57a9d22cee28d83e50e9c18b36b72cc"><div class="ttname"><a href="structbs.html#af57a9d22cee28d83e50e9c18b36b72cc">bs::all</a></div><div class="ttdeci">vw * all</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00030">bs.cc:30</a></div></div>
<div class="ttc" id="structexample_html_a3e4e427253321a8867a27827a3dd59c1"><div class="ttname"><a href="structexample.html#a3e4e427253321a8867a27827a3dd59c1">example::partial_prediction</a></div><div class="ttdeci">float partial_prediction</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00068">example.h:68</a></div></div>
<div class="ttc" id="structbs_html_a814cef13fb8be4f6fa2eca3ff8765573"><div class="ttname"><a href="structbs.html#a814cef13fb8be4f6fa2eca3ff8765573">bs::_random_state</a></div><div class="ttdeci">std::shared_ptr< rand_state > _random_state</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00031">bs.cc:31</a></div></div>
<div class="ttc" id="structvw_html"><div class="ttname"><a href="structvw.html">vw</a></div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00369">global_data.h:369</a></div></div>
<div class="ttc" id="structbs_html_a001c75f2548c1f97e1fb1769689a6614"><div class="ttname"><a href="structbs.html#a001c75f2548c1f97e1fb1769689a6614">bs::B</a></div><div class="ttdeci">uint32_t B</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00025">bs.cc:25</a></div></div>
<div class="ttc" id="structvw_html_a9525bfa2fbc30109b419bd8f418a8a4b"><div class="ttname"><a href="structvw.html#a9525bfa2fbc30109b419bd8f418a8a4b">vw::print_text</a></div><div class="ttdeci">void(* print_text)(int, std::string, v_array< char >)</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00522">global_data.h:522</a></div></div>
<div class="ttc" id="bs_8h_html_a907800596f3b54d22867347fbba61da4"><div class="ttname"><a href="bs_8h.html#a907800596f3b54d22867347fbba61da4">BS_TYPE_VOTE</a></div><div class="ttdeci">#define BS_TYPE_VOTE</div><div class="ttdef"><b>Definition:</b> <a href="bs_8h_source.html#l00009">bs.h:9</a></div></div>
<div class="ttc" id="bs_8h_html_a8c0d8475abdfcdaf21a68c4b2945f3de"><div class="ttname"><a href="bs_8h.html#a8c0d8475abdfcdaf21a68c4b2945f3de">BS_TYPE_MEAN</a></div><div class="ttdeci">#define BS_TYPE_MEAN</div><div class="ttdef"><b>Definition:</b> <a href="bs_8h_source.html#l00008">bs.h:8</a></div></div>
<div class="ttc" id="bs_8cc_html_a4fb086d2b446da2c3b9537066aa7ae43"><div class="ttname"><a href="bs_8cc.html#a4fb086d2b446da2c3b9537066aa7ae43">bs_predict_vote</a></div><div class="ttdeci">void bs_predict_vote(example &ec, std::vector< double > &pred_vec)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00043">bs.cc:43</a></div></div>
<div class="ttc" id="bs_8cc_html_a8392dfd2ed19750f6eb14818cefd67ee"><div class="ttname"><a href="bs_8cc.html#a8392dfd2ed19750f6eb14818cefd67ee">bs_predict_mean</a></div><div class="ttdeci">void bs_predict_mean(vw &all, example &ec, std::vector< double > &pred_vec)</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00036">bs.cc:36</a></div></div>
<div class="ttc" id="structexample_html_ad1477e890371ed8253f1953d4190ba49"><div class="ttname"><a href="structexample.html#ad1477e890371ed8253f1953d4190ba49">example::pred</a></div><div class="ttdeci">polyprediction pred</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00060">example.h:60</a></div></div>
<div class="ttc" id="structLEARNER_1_1learner_html_a9984332080a6ee4730a5762e9be3a3f6"><div class="ttname"><a href="structLEARNER_1_1learner.html#a9984332080a6ee4730a5762e9be3a3f6">LEARNER::learner::learn</a></div><div class="ttdeci">void learn(E &ec, size_t i=0)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00160">learner.h:160</a></div></div>
<div class="ttc" id="structexample_html_a403be75fc4fdd058e4f7c1baf39be11a"><div class="ttname"><a href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">example::weight</a></div><div class="ttdeci">float weight</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00062">example.h:62</a></div></div>
<div class="ttc" id="vw__exception_8h_html_a6418ba1768107875abafe9a0b6b8b2ad"><div class="ttname"><a href="vw__exception_8h.html#a6418ba1768107875abafe9a0b6b8b2ad">THROW</a></div><div class="ttdeci">#define THROW(args)</div><div class="ttdef"><b>Definition:</b> <a href="vw__exception_8h_source.html#l00181">vw_exception.h:181</a></div></div>
<div class="ttc" id="structbs_html_abf0d7010058fb6c138274bdb6460fa50"><div class="ttname"><a href="structbs.html#abf0d7010058fb6c138274bdb6460fa50">bs::pred_vec</a></div><div class="ttdeci">std::vector< double > * pred_vec</div><div class="ttdef"><b>Definition:</b> <a href="bs_8cc_source.html#l00029">bs.cc:29</a></div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#a4bece77a15f02909b0c3d134ddf986e3">◆ </a></span>print_result()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void print_result </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>f</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>res</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structv__array.html">v_array</a>< char > </td>
<td class="paramname"><em>tag</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>lb</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>ub</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="bs_8cc_source.html#l00136">136</a> of file <a class="el" href="bs_8cc_source.html">bs.cc</a>.</p>
<p class="reference">References <a class="el" href="global__data_8cc_source.html#l00081">print_tag()</a>, and <a class="el" href="io__buf_8cc_source.html#l00140">io_buf::write_file_or_socket()</a>.</p>
<p class="reference">Referenced by <a class="el" href="parser_8cc_source.html#l00312">enable_sources()</a>, <a class="el" href="gd__mf_8cc_source.html#l00081">mf_print_audit_features()</a>, <a class="el" href="bs_8cc_source.html#l00151">output_example()</a>, <a class="el" href="gd_8cc_source.html#l00331">GD::print_audit_features()</a>, and <a class="el" href="parser_8cc_source.html#l00126">reset_source()</a>.</p>
<div class="fragment"><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> {</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a> >= 0)</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  std::stringstream ss;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  ss << std::fixed << res;</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="global__data_8cc.html#ab237ee22848ed1d3e877ef3162581647">print_tag</a>(ss, tag);</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  ss << std::fixed << <span class="charliteral">' '</span> << lb << <span class="charliteral">' '</span> << ub << <span class="charliteral">'\n'</span>;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  ssize_t len = ss.str().size();</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  ssize_t t = <a class="code" href="classio__buf.html#aebb98760bcdcea6475de5103099e68dc">io_buf::write_file_or_socket</a>(<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>, ss.str().c_str(), (<span class="keywordtype">unsigned</span> int)len);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">if</span> (t != len)</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  std::cerr << <span class="stringliteral">"write error: "</span> << strerror(errno) << std::endl;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> }</div><div class="ttc" id="classio__buf_html_aebb98760bcdcea6475de5103099e68dc"><div class="ttname"><a href="classio__buf.html#aebb98760bcdcea6475de5103099e68dc">io_buf::write_file_or_socket</a></div><div class="ttdeci">static ssize_t write_file_or_socket(int f, const void *buf, size_t nbytes)</div><div class="ttdef"><b>Definition:</b> <a href="io__buf_8cc_source.html#l00140">io_buf.cc:140</a></div></div>
<div class="ttc" id="global__data_8cc_html_ab237ee22848ed1d3e877ef3162581647"><div class="ttname"><a href="global__data_8cc.html#ab237ee22848ed1d3e877ef3162581647">print_tag</a></div><div class="ttdeci">int print_tag(std::stringstream &ss, v_array< char > tag)</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8cc_source.html#l00081">global_data.cc:81</a></div></div>
<div class="ttc" id="cache_8cc_html_af900396d7b72ff2a7002e8befe8cf8f1"><div class="ttname"><a href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a></div><div class="ttdeci">float f</div><div class="ttdef"><b>Definition:</b> <a href="cache_8cc_source.html#l00040">cache.cc:40</a></div></div>
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