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<a href="active_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#include <cerrno></span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#include "<a class="code" href="reductions_8h.html">reductions.h</a>"</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "<a class="code" href="rand48_8h.html">rand48.h</a>"</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include <cfloat></span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "<a class="code" href="vw_8h.html">vw.h</a>"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="active_8h.html">active.h</a>"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "<a class="code" href="vw__exception_8h.html">vw_exception.h</a>"</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">using namespace </span><a class="code" href="namespaceLEARNER.html">LEARNER</a>;</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">using namespace </span><a class="code" href="namespaceVW_1_1config.html">VW::config</a>;</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div><div class="line"><a name="l00012"></a><span class="lineno"><a class="line" href="active_8cc.html#aa7125136ef09c3fcbd99f68c514142cd"> 12</a></span> <span class="keywordtype">float</span> <a class="code" href="active_8cc.html#aa7125136ef09c3fcbd99f68c514142cd">get_active_coin_bias</a>(<span class="keywordtype">float</span> k, <span class="keywordtype">float</span> avg_loss, <span class="keywordtype">float</span> g, <span class="keywordtype">float</span> c0)</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> {</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  <span class="keywordtype">float</span> b, sb, rs, sl;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  b = (float)(c0 * (log(k + 1.) + 0.0001) / (k + 0.0001));</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  sb = std::sqrt(b);</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  avg_loss = std::min(1.<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>, std::max(0.<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>, avg_loss)); <span class="comment">// loss should be in [0,1]</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  sl = std::sqrt(avg_loss) + std::sqrt(avg_loss + g);</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">if</span> (g <= sb * sl + b)</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  rs = (sl + std::sqrt(sl * sl + 4 * g)) / (2 * g);</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordflow">return</span> b * rs * rs;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> }</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="active_8cc.html#a17b8b389aa3e435189f037a906154bf8"> 26</a></span> <span class="keywordtype">float</span> <a class="code" href="active_8cc.html#a17b8b389aa3e435189f037a906154bf8">query_decision</a>(<a class="code" href="structactive.html">active</a>& <a class="code" href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a>, <span class="keywordtype">float</span> ec_revert_weight, <span class="keywordtype">float</span> k)</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> {</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordtype">float</span> <a class="code" href="rand48_8cc.html#a763306b27f1a8a788d69651e0ff3ca85">bias</a>, avg_loss, weighted_queries;</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">if</span> (k <= 1.)</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  bias = 1.;</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  weighted_queries = (float)a.<a class="code" href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">all</a>-><a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#a92ff45eb41fa4b3ccab7576925c6acdc">weighted_labeled_examples</a>;</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  avg_loss = (<span class="keywordtype">float</span>)(a.<a class="code" href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">all</a>-><a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#aadcbe6fbce05c332e87da9aa517b439e">sum_loss</a> / k + std::sqrt((1. + 0.5 * log(k)) / (weighted_queries + 0.0001)));</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  bias = <a class="code" href="active_8cc.html#aa7125136ef09c3fcbd99f68c514142cd">get_active_coin_bias</a>(k, avg_loss, ec_revert_weight / k, a.<a class="code" href="structactive.html#a3421d80ae5bc66b42dadc1a6d608d5fe">active_c0</a>);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keywordflow">if</span> (a.<a class="code" href="structactive.html#aaeacbea2d39e286537d5d0dd4683883c">_random_state</a>->get_and_update_random() < <a class="code" href="rand48_8cc.html#a763306b27f1a8a788d69651e0ff3ca85">bias</a>)</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> 1.<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a> / bias;</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">return</span> -1.;</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> }</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">template</span> <<span class="keywordtype">bool</span> is_learn></div><div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="active_8cc.html#a295a3f8241204bcabe4a8f95bb7e55e7"> 44</a></span> <span class="keywordtype">void</span> <a class="code" href="active_8cc.html#a295a3f8241204bcabe4a8f95bb7e55e7">predict_or_learn_simulation</a>(<a class="code" href="structactive.html">active</a>& <a class="code" href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a>, <a class="code" href="structLEARNER_1_1learner.html">single_learner</a>& base, <a class="code" href="structexample.html">example</a>& ec)</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a8b4f75763c0ec9a26eb5255780e782a8">predict</a>(ec);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (is_learn)</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  {</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="structvw.html">vw</a>& all = *a.<a class="code" href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">all</a>;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">float</span> k = (float)all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#a40b662eb223f0c8fa01ad05494b7e08b">t</a>;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">float</span> threshold = 0.f;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  ec.<a class="code" href="structexample.html#a30e80546a762a93ac6420fe52d866ab2">confidence</a> = fabsf(ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a> - threshold) / base.<a class="code" href="structLEARNER_1_1learner.html#abd4c4da96ed199fc499bd53d1d90f443">sensitivity</a>(ec);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">float</span> importance = <a class="code" href="active_8cc.html#a17b8b389aa3e435189f037a906154bf8">query_decision</a>(a, ec.<a class="code" href="structexample.html#a30e80546a762a93ac6420fe52d866ab2">confidence</a>, k);</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="keywordflow">if</span> (importance > 0)</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#a4727f86fcc45a0a9bc961efd1ea13836">queries</a> += 1;</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> *= importance;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a9984332080a6ee4730a5762e9be3a3f6">learn</a>(ec);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">else</span></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>  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="l00067"></a><span class="lineno"> 67</span>  ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> = 0.f;</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> }</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> <span class="keyword">template</span> <<span class="keywordtype">bool</span> is_learn></div><div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="active_8cc.html#a053619a9c5accc3b397c35e5ba174405"> 73</a></span> <span class="keywordtype">void</span> <a class="code" href="active_8cc.html#a053619a9c5accc3b397c35e5ba174405">predict_or_learn_active</a>(<a class="code" href="structactive.html">active</a>& <a class="code" href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a>, <a class="code" href="structLEARNER_1_1learner.html">single_learner</a>& base, <a class="code" href="structexample.html">example</a>& ec)</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">if</span> (is_learn)</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a9984332080a6ee4730a5762e9be3a3f6">learn</a>(ec);</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  base.<a class="code" href="structLEARNER_1_1learner.html#a8b4f75763c0ec9a26eb5255780e782a8">predict</a>(ec);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">if</span> (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="l00081"></a><span class="lineno"> 81</span>  {</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">float</span> threshold = (a.<a class="code" href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">all</a>-><a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#ab7a25e683bebc7347fa97d71e116f712">max_label</a> + a.<a class="code" href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">all</a>-><a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#a7169344996c735da7b771fb6ec93484e">min_label</a>) * 0.5<a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>;</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  ec.<a class="code" href="structexample.html#a30e80546a762a93ac6420fe52d866ab2">confidence</a> = fabsf(ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a> - threshold) / base.<a class="code" href="structLEARNER_1_1learner.html#abd4c4da96ed199fc499bd53d1d90f443">sensitivity</a>(ec);</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> </div><div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="active_8cc.html#a7e3adef617ad84d41fc78719fbb89e2b"> 87</a></span> <span class="keywordtype">void</span> <a class="code" href="active_8cc.html#a7e3adef617ad84d41fc78719fbb89e2b">active_print_result</a>(<span class="keywordtype">int</span> <a class="code" href="cache_8cc.html#af900396d7b72ff2a7002e8befe8cf8f1">f</a>, <span class="keywordtype">float</span> res, <span class="keywordtype">float</span> <a class="code" href="array__parameters__dense_8h.html#a4d04a2043fa7480d905108e63adb0bab">weight</a>, <a class="code" href="structv__array.html">v_array<char></a> tag)</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> {</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (f >= 0)</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  std::stringstream ss;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  ss << std::fixed << res;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (!<a class="code" href="global__data_8cc.html#ab237ee22848ed1d3e877ef3162581647">print_tag</a>(ss, tag))</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  ss << <span class="charliteral">' '</span>;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (weight >= 0)</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ss << <span class="stringliteral">" "</span> << std::fixed << <a class="code" href="array__parameters__dense_8h.html#a4d04a2043fa7480d905108e63adb0bab">weight</a>;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  ss << <span class="charliteral">'\n'</span>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  ssize_t len = ss.str().size();</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  ssize_t t = <a class="code" href="classio__buf.html#aebb98760bcdcea6475de5103099e68dc">io_buf::write_file_or_socket</a>(f, ss.str().c_str(), (<span class="keywordtype">unsigned</span> int)len);</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (t != len)</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  std::cerr << <span class="stringliteral">"write error: "</span> << strerror(errno) << std::endl;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> }</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="active_8cc.html#a6ec10f4789bb339b73c6e1933a2b2ed2"> 105</a></span> <span class="keywordtype">void</span> <a class="code" href="active_8cc.html#a6ec10f4789bb339b73c6e1933a2b2ed2">output_and_account_example</a>(<a class="code" href="structvw.html">vw</a>& all, <a class="code" href="structactive.html">active</a>& <a class="code" href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a>, <a class="code" href="structexample.html">example</a>& ec)</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> {</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <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="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</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="l00110"></a><span class="lineno"> 110</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="l00111"></a><span class="lineno"> 111</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="l00112"></a><span class="lineno"> 112</span>  all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#ac3d7065c2ec09563226497ab0805b4b5">weighted_unlabeled_examples</a> += ld.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a> == FLT_MAX ? ec.<a class="code" href="structexample.html#a403be75fc4fdd058e4f7c1baf39be11a">weight</a> : 0;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordtype">float</span> ai = -1;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (ld.<a class="code" href="structlabel__data.html#a09103f622b965d8c14f0047b53ba7fe1">label</a> == FLT_MAX)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  ai = <a class="code" href="active_8cc.html#a17b8b389aa3e435189f037a906154bf8">query_decision</a>(a, ec.<a class="code" href="structexample.html#a30e80546a762a93ac6420fe52d866ab2">confidence</a>, (<span class="keywordtype">float</span>)all.<a class="code" href="structvw.html#aada16c220b8d3eaf62aaee86168dde5e">sd</a>-><a class="code" href="structshared__data.html#ac3d7065c2ec09563226497ab0805b4b5">weighted_unlabeled_examples</a>);</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>  all.<a class="code" href="structvw.html#a2372ff9a6a58d5796b1e8283b05da941">print</a>(all.<a class="code" href="structvw.html#a779813620c14d314518d7244ab746fbb">raw_prediction</a>, ec.<a class="code" href="structexample.html#a3e4e427253321a8867a27827a3dd59c1">partial_prediction</a>, -1, ec.<a class="code" href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">tag</a>);</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> i : all.<a class="code" href="structvw.html#a0e33c9d541494dd47ffb4e35c82fb982">final_prediction_sink</a>)</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  {</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="active_8cc.html#a7e3adef617ad84d41fc78719fbb89e2b">active_print_result</a>(i, ec.<a class="code" href="structexample.html#ad1477e890371ed8253f1953d4190ba49">pred</a>.<a class="code" href="unionpolyprediction.html#ae29f42559acac5a2b08322a7fe887f04">scalar</a>, ai, ec.<a class="code" href="structexample.html#ae05e98faef8389156ebb6d8f823ca378">tag</a>);</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="namespaceCB.html#a4d77d033fd0181408b6071dcdd67c32c">print_update</a>(all, ec);</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> }</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="active_8cc.html#a97ff1bf040bedd7546bacfa3afd82f37"> 127</a></span> <span class="keywordtype">void</span> <a class="code" href="active_8cc.html#a97ff1bf040bedd7546bacfa3afd82f37">return_active_example</a>(<a class="code" href="structvw.html">vw</a>& all, <a class="code" href="structactive.html">active</a>& <a class="code" href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a>, <a class="code" href="structexample.html">example</a>& ec)</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> {</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <a class="code" href="active_8cc.html#a6ec10f4789bb339b73c6e1933a2b2ed2">output_and_account_example</a>(all, a, ec);</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="namespaceVW.html#a67d2e194f1865809a14c8f3899497c4c">VW::finish_example</a>(all, ec);</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> }</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="active_8h.html#ae45dc77e379230dd62970bf5cfa18c3e"> 133</a></span> <a class="code" href="structLEARNER_1_1learner.html">base_learner</a>* <a class="code" href="active_8cc.html#a4b0bd83f7c5ad87539fc5e812fa250ba">active_setup</a>(<a class="code" href="structVW_1_1config_1_1options__i.html">options_i</a>& options, <a class="code" href="structvw.html">vw</a>& all)</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> {</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">auto</span> data = scoped_calloc_or_throw<active>();</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">bool</span> active_option = <span class="keyword">false</span>;</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">bool</span> simulation = <span class="keyword">false</span>;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="structVW_1_1config_1_1option__group__definition.html">option_group_definition</a> new_options(<span class="stringliteral">"Active Learning"</span>);</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  new_options.<a class="code" href="structVW_1_1config_1_1option__group__definition.html#aecce8d13a7a8328d479bb3a52f9d3980">add</a>(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"active"</span>, active_option).keep().help(<span class="stringliteral">"enable active learning"</span>))</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  .<a class="code" href="structVW_1_1config_1_1option__group__definition.html#aecce8d13a7a8328d479bb3a52f9d3980">add</a>(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"simulation"</span>, simulation).help(<span class="stringliteral">"active learning simulation mode"</span>))</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  .<a class="code" href="structVW_1_1config_1_1option__group__definition.html#aecce8d13a7a8328d479bb3a52f9d3980">add</a>(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"mellowness"</span>, data->active_c0)</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  .default_value(8.f)</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  .help(<span class="stringliteral">"active learning mellowness parameter c_0. Default 8"</span>));</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</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="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> (!active_option)</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  data->all = &all;</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  data->_random_state = all.<a class="code" href="structvw.html#a30bca3f2116b0b7db82d60c76467f6c4">get_random_state</a>();</div><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>  <span class="keywordflow">if</span> (options.<a class="code" href="structVW_1_1config_1_1options__i.html#ab5171ac33158fca4580d3f0658c4929e">was_supplied</a>(<span class="stringliteral">"lda"</span>))</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <a class="code" href="vw__exception_8h.html#a6418ba1768107875abafe9a0b6b8b2ad">THROW</a>(<span class="stringliteral">"error: you can't combine lda and active learning"</span>);</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">auto</span> base = <a class="code" href="namespaceLEARNER.html#abd71c87941b752738319b3d1ed64fe47">as_singleline</a>(<a class="code" href="parse__args_8cc.html#a34c806099b7857a0ffc630bc8142beba">setup_base</a>(options, all));</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="comment">// Create new learner</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <a class="code" href="structLEARNER_1_1learner.html">learner<active, example></a>* l;</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</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">"simulation"</span>))</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  l = &<a class="code" href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">init_learner</a>(data, base, predict_or_learn_simulation<true>, predict_or_learn_simulation<false>);</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  all.<a class="code" href="structvw.html#a150b8efa21ed8f6425698892a17537a8">active</a> = <span class="keyword">true</span>;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  l = &<a class="code" href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">init_learner</a>(data, base, predict_or_learn_active<true>, predict_or_learn_active<false>);</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  l-><a class="code" href="structLEARNER_1_1learner.html#a459cdbfe2232f11e6c73933961af97e1">set_finish_example</a>(<a class="code" href="active_8cc.html#a97ff1bf040bedd7546bacfa3afd82f37">return_active_example</a>);</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceLEARNER.html#abcf6bdc2fa5e38928c33212e20dbbd74">make_base</a>(*l);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div><div class="ttc" id="structshared__data_html_aadcbe6fbce05c332e87da9aa517b439e"><div class="ttname"><a href="structshared__data.html#aadcbe6fbce05c332e87da9aa517b439e">shared_data::sum_loss</a></div><div class="ttdeci">double sum_loss</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00145">global_data.h:145</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="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="structactive_html_aaeacbea2d39e286537d5d0dd4683883c"><div class="ttname"><a href="structactive.html#aaeacbea2d39e286537d5d0dd4683883c">active::_random_state</a></div><div class="ttdeci">std::shared_ptr< rand_state > _random_state</div><div class="ttdef"><b>Definition:</b> <a href="active_8h_source.html#l00010">active.h:10</a></div></div>
<div class="ttc" id="structactive_html_a2e7546cd5a68b49e2fb159ff4a0a2fa8"><div class="ttname"><a href="structactive.html#a2e7546cd5a68b49e2fb159ff4a0a2fa8">active::all</a></div><div class="ttdeci">vw * all</div><div class="ttdef"><b>Definition:</b> <a href="active_8h_source.html#l00009">active.h:9</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="structactive_html"><div class="ttname"><a href="structactive.html">active</a></div><div class="ttdef"><b>Definition:</b> <a href="active_8h_source.html#l00006">active.h:6</a></div></div>
<div class="ttc" id="active_8cc_html_a97ff1bf040bedd7546bacfa3afd82f37"><div class="ttname"><a href="active_8cc.html#a97ff1bf040bedd7546bacfa3afd82f37">return_active_example</a></div><div class="ttdeci">void return_active_example(vw &all, active &a, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00127">active.cc:127</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="structshared__data_html_ac3d7065c2ec09563226497ab0805b4b5"><div class="ttname"><a href="structshared__data.html#ac3d7065c2ec09563226497ab0805b4b5">shared_data::weighted_unlabeled_examples</a></div><div class="ttdeci">double weighted_unlabeled_examples</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00143">global_data.h:143</a></div></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="active_8cc_html_a6ec10f4789bb339b73c6e1933a2b2ed2"><div class="ttname"><a href="active_8cc.html#a6ec10f4789bb339b73c6e1933a2b2ed2">output_and_account_example</a></div><div class="ttdeci">void output_and_account_example(vw &all, active &a, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00105">active.cc:105</a></div></div>
<div class="ttc" id="active_8cc_html_a17b8b389aa3e435189f037a906154bf8"><div class="ttname"><a href="active_8cc.html#a17b8b389aa3e435189f037a906154bf8">query_decision</a></div><div class="ttdeci">float query_decision(active &a, float ec_revert_weight, float k)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00026">active.cc:26</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="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="structexample_html_a30e80546a762a93ac6420fe52d866ab2"><div class="ttname"><a href="structexample.html#a30e80546a762a93ac6420fe52d866ab2">example::confidence</a></div><div class="ttdeci">float confidence</div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00072">example.h:72</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="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="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="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="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="active_8cc_html_a7e3adef617ad84d41fc78719fbb89e2b"><div class="ttname"><a href="active_8cc.html#a7e3adef617ad84d41fc78719fbb89e2b">active_print_result</a></div><div class="ttdeci">void active_print_result(int f, float res, float weight, v_array< char > tag)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00087">active.cc:87</a></div></div>
<div class="ttc" id="vw__exception_8h_html"><div class="ttname"><a href="vw__exception_8h.html">vw_exception.h</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="active_8cc_html_a295a3f8241204bcabe4a8f95bb7e55e7"><div class="ttname"><a href="active_8cc.html#a295a3f8241204bcabe4a8f95bb7e55e7">predict_or_learn_simulation</a></div><div class="ttdeci">void predict_or_learn_simulation(active &a, single_learner &base, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00044">active.cc:44</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="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="active_8cc_html_a4b0bd83f7c5ad87539fc5e812fa250ba"><div class="ttname"><a href="active_8cc.html#a4b0bd83f7c5ad87539fc5e812fa250ba">active_setup</a></div><div class="ttdeci">base_learner * active_setup(options_i &options, vw &all)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00133">active.cc:133</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_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="active_8cc_html_aa7125136ef09c3fcbd99f68c514142cd"><div class="ttname"><a href="active_8cc.html#aa7125136ef09c3fcbd99f68c514142cd">get_active_coin_bias</a></div><div class="ttdeci">float get_active_coin_bias(float k, float avg_loss, float g, float c0)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00012">active.cc:12</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="structvw_html_a150b8efa21ed8f6425698892a17537a8"><div class="ttname"><a href="structvw.html#a150b8efa21ed8f6425698892a17537a8">vw::active</a></div><div class="ttdeci">bool active</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00489">global_data.h:489</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="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="structshared__data_html_a40b662eb223f0c8fa01ad05494b7e08b"><div class="ttname"><a href="structshared__data.html#a40b662eb223f0c8fa01ad05494b7e08b">shared_data::t</a></div><div class="ttdeci">double t</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00140">global_data.h:140</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1options__i_html"><div class="ttname"><a href="structVW_1_1config_1_1options__i.html">VW::config::options_i</a></div><div class="ttdef"><b>Definition:</b> <a href="options_8h_source.html#l00107">options.h:107</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="rand48_8h_html"><div class="ttname"><a href="rand48_8h.html">rand48.h</a></div></div>
<div class="ttc" id="structexample_html"><div class="ttname"><a href="structexample.html">example</a></div><div class="ttdef"><b>Definition:</b> <a href="example_8h_source.html#l00054">example.h:54</a></div></div>
<div class="ttc" id="structactive_html_a3421d80ae5bc66b42dadc1a6d608d5fe"><div class="ttname"><a href="structactive.html#a3421d80ae5bc66b42dadc1a6d608d5fe">active::active_c0</a></div><div class="ttdeci">float active_c0</div><div class="ttdef"><b>Definition:</b> <a href="active_8h_source.html#l00008">active.h:8</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>
<div class="ttc" id="reductions_8h_html"><div class="ttname"><a href="reductions_8h.html">reductions.h</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="structLEARNER_1_1learner_html_abd4c4da96ed199fc499bd53d1d90f443"><div class="ttname"><a href="structLEARNER_1_1learner.html#abd4c4da96ed199fc499bd53d1d90f443">LEARNER::learner::sensitivity</a></div><div class="ttdeci">float sensitivity(example &ec, size_t i=0)</div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00242">learner.h:242</a></div></div>
<div class="ttc" id="array__parameters__dense_8h_html_a4d04a2043fa7480d905108e63adb0bab"><div class="ttname"><a href="array__parameters__dense_8h.html#a4d04a2043fa7480d905108e63adb0bab">weight</a></div><div class="ttdeci">float weight</div><div class="ttdef"><b>Definition:</b> <a href="array__parameters__dense_8h_source.html#l00006">array_parameters_dense.h:6</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1option__group__definition_html_aecce8d13a7a8328d479bb3a52f9d3980"><div class="ttname"><a href="structVW_1_1config_1_1option__group__definition.html#aecce8d13a7a8328d479bb3a52f9d3980">VW::config::option_group_definition::add</a></div><div class="ttdeci">option_group_definition & add(T &&op)</div><div class="ttdef"><b>Definition:</b> <a href="options_8h_source.html#l00090">options.h:90</a></div></div>
<div class="ttc" id="namespaceVW_1_1config_html"><div class="ttname"><a href="namespaceVW_1_1config.html">VW::config</a></div><div class="ttdef"><b>Definition:</b> <a href="options_8h_source.html#l00011">options.h:11</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="rand48_8cc_html_a591b56c87cb459191199d0ed6e4f5b9b"><div class="ttname"><a href="rand48_8cc.html#a591b56c87cb459191199d0ed6e4f5b9b">a</a></div><div class="ttdeci">constexpr uint64_t a</div><div class="ttdef"><b>Definition:</b> <a href="rand48_8cc_source.html#l00011">rand48.cc:11</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="structshared__data_html_a7169344996c735da7b771fb6ec93484e"><div class="ttname"><a href="structshared__data.html#a7169344996c735da7b771fb6ec93484e">shared_data::min_label</a></div><div class="ttdeci">float min_label</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00150">global_data.h:150</a></div></div>
<div class="ttc" id="vw_8h_html"><div class="ttname"><a href="vw_8h.html">vw.h</a></div></div>
<div class="ttc" id="structshared__data_html_ab7a25e683bebc7347fa97d71e116f712"><div class="ttname"><a href="structshared__data.html#ab7a25e683bebc7347fa97d71e116f712">shared_data::max_label</a></div><div class="ttdeci">float max_label</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00151">global_data.h:151</a></div></div>
<div class="ttc" id="structshared__data_html_a92ff45eb41fa4b3ccab7576925c6acdc"><div class="ttname"><a href="structshared__data.html#a92ff45eb41fa4b3ccab7576925c6acdc">shared_data::weighted_labeled_examples</a></div><div class="ttdeci">double weighted_labeled_examples</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00141">global_data.h:141</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>
<div class="ttc" id="active_8cc_html_a053619a9c5accc3b397c35e5ba174405"><div class="ttname"><a href="active_8cc.html#a053619a9c5accc3b397c35e5ba174405">predict_or_learn_active</a></div><div class="ttdeci">void predict_or_learn_active(active &a, single_learner &base, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="active_8cc_source.html#l00073">active.cc:73</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="namespaceLEARNER_html"><div class="ttname"><a href="namespaceLEARNER.html">LEARNER</a></div><div class="ttdef"><b>Definition:</b> <a href="cb__explore_8h_source.html#l00008">cb_explore.h:8</a></div></div>
<div class="ttc" id="active_8h_html"><div class="ttname"><a href="active_8h.html">active.h</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="structv__array_html"><div class="ttname"><a href="structv__array.html">v_array< char ></a></div></div>
<div class="ttc" id="rand48_8cc_html_a763306b27f1a8a788d69651e0ff3ca85"><div class="ttname"><a href="rand48_8cc.html#a763306b27f1a8a788d69651e0ff3ca85">bias</a></div><div class="ttdeci">constexpr int bias</div><div class="ttdef"><b>Definition:</b> <a href="rand48_8cc_source.html#l00014">rand48.cc:14</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="structshared__data_html_a4727f86fcc45a0a9bc961efd1ea13836"><div class="ttname"><a href="structshared__data.html#a4727f86fcc45a0a9bc961efd1ea13836">shared_data::queries</a></div><div class="ttdeci">size_t queries</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00135">global_data.h:135</a></div></div>
<div class="ttc" id="structvw_html_a2372ff9a6a58d5796b1e8283b05da941"><div class="ttname"><a href="structvw.html#a2372ff9a6a58d5796b1e8283b05da941">vw::print</a></div><div class="ttdeci">void(* print)(int, float, float, v_array< char >)</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00521">global_data.h:521</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>
<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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