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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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<div class="header">
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<a href="#namespaces">Namespaces</a> |
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<div class="title">cb_algs.h File Reference</div> </div>
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<div class="textblock"><code>#include "<a class="el" href="baseline_8h_source.html">baseline.h</a>"</code><br />
</div>
<p><a href="cb__algs_8h_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="namespaces"></a>
Namespaces</h2></td></tr>
<tr class="memitem:namespaceCB__ALGS"><td class="memItemLeft" align="right" valign="top">  </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html">CB_ALGS</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="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a83cbf768330207512fd8b3b710cd24e1"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#a83cbf768330207512fd8b3b710cd24e1">CB_TYPE_DR</a>   0</td></tr>
<tr class="separator:a83cbf768330207512fd8b3b710cd24e1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a65bcc744db15fb2d325d39d571f09498"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#a65bcc744db15fb2d325d39d571f09498">CB_TYPE_DM</a>   1</td></tr>
<tr class="separator:a65bcc744db15fb2d325d39d571f09498"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:add10d6d9805928a8c3c453c9d0d622d4"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#add10d6d9805928a8c3c453c9d0d622d4">CB_TYPE_IPS</a>   2</td></tr>
<tr class="separator:add10d6d9805928a8c3c453c9d0d622d4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad6cb5549c545c341e66f7605e5fec984"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#ad6cb5549c545c341e66f7605e5fec984">CB_TYPE_MTR</a>   3</td></tr>
<tr class="separator:ad6cb5549c545c341e66f7605e5fec984"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4a3a09d8d2450634ade74b717e0b356d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#a4a3a09d8d2450634ade74b717e0b356d">CB_TYPE_SM</a>   4</td></tr>
<tr class="separator:a4a3a09d8d2450634ade74b717e0b356d"><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:a2b2e9ee0945ab577ddb1ad8b94d2c7cf"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespaceLEARNER.html#a807843d5185e0c5005a54bf28c111c79">LEARNER::base_learner</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="cb__algs_8h.html#a2b2e9ee0945ab577ddb1ad8b94d2c7cf">cb_algs_setup</a> (<a class="el" href="structVW_1_1config_1_1options__i.html">VW::config::options_i</a> &options, <a class="el" href="structvw.html">vw</a> &all)</td></tr>
<tr class="separator:a2b2e9ee0945ab577ddb1ad8b94d2c7cf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaa53cafecc3992dbca036f41ef3ea55f"><td class="memTemplParams" colspan="2">template<bool is_learn> </td></tr>
<tr class="memitem:aaa53cafecc3992dbca036f41ef3ea55f"><td class="memTemplItemLeft" align="right" valign="top">float </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html#aaa53cafecc3992dbca036f41ef3ea55f">CB_ALGS::get_cost_pred</a> (<a class="el" href="namespaceLEARNER.html#a43eb8cec4287b4ad02967d7012bbf0a3">LEARNER::single_learner</a> *<a class="el" href="structscorer.html">scorer</a>, <a class="el" href="structCB_1_1cb__class.html">CB::cb_class</a> *known_cost, <a class="el" href="structexample.html">example</a> &ec, uint32_t index, uint32_t base)</td></tr>
<tr class="separator:aaa53cafecc3992dbca036f41ef3ea55f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a77d874f0f45f74e34a305e3d0f869b79"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html#a77d874f0f45f74e34a305e3d0f869b79">CB_ALGS::get_cost_estimate</a> (<a class="el" href="structCB_1_1cb__class.html">CB::cb_class</a> *observation, uint32_t <a class="el" href="search_8h.html#a38f57e55606ccd5596fee801ba4d136b">action</a>, float offset=0.)</td></tr>
<tr class="separator:a77d874f0f45f74e34a305e3d0f869b79"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac436d05a1d50df41f2d17b5e56e2de26"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html#ac436d05a1d50df41f2d17b5e56e2de26">CB_ALGS::get_cost_estimate</a> (<a class="el" href="structCB_1_1cb__class.html">CB::cb_class</a> *observation, <a class="el" href="structCOST__SENSITIVE_1_1label.html">COST_SENSITIVE::label</a> &scores, uint32_t <a class="el" href="search_8h.html#a38f57e55606ccd5596fee801ba4d136b">action</a>)</td></tr>
<tr class="separator:ac436d05a1d50df41f2d17b5e56e2de26"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8f695e7d4f243fd4d0def8d6f12bf914"><td class="memItemLeft" align="right" valign="top">float </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html#a8f695e7d4f243fd4d0def8d6f12bf914">CB_ALGS::get_cost_estimate</a> (<a class="el" href="structACTION__SCORE_1_1action__score.html">ACTION_SCORE::action_score</a> &a_s, float cost, uint32_t <a class="el" href="search_8h.html#a38f57e55606ccd5596fee801ba4d136b">action</a>, float offset=0.)</td></tr>
<tr class="separator:a8f695e7d4f243fd4d0def8d6f12bf914"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0066e59b0219432265df0426329ea266"><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceCB__ALGS.html#a0066e59b0219432265df0426329ea266">CB_ALGS::example_is_newline_not_header</a> (<a class="el" href="structexample.html">example</a> const &ec)</td></tr>
<tr class="separator:a0066e59b0219432265df0426329ea266"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a65bcc744db15fb2d325d39d571f09498"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a65bcc744db15fb2d325d39d571f09498">◆ </a></span>CB_TYPE_DM</h2>
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<td class="memname">#define CB_TYPE_DM   1</td>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="cb__algs_8h_source.html#l00014">14</a> of file <a class="el" href="cb__algs_8h_source.html">cb_algs.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="cb__adf_8cc_source.html#l00481">cb_adf_setup()</a>, <a class="el" href="cb__algs_8cc_source.html#l00132">cb_algs_setup()</a>, <a class="el" href="cb__adf_8cc_source.html#l00295">CB_ADF::cb_adf::do_actual_learning()</a>, <a class="el" href="gen__cs__example_8h_source.html#l00167">GEN_CS::gen_cs_example()</a>, and <a class="el" href="cb__algs_8cc_source.html#l00049">CB_ALGS::predict_or_learn()</a>.</p>
</div>
</div>
<a id="a83cbf768330207512fd8b3b710cd24e1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a83cbf768330207512fd8b3b710cd24e1">◆ </a></span>CB_TYPE_DR</h2>
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<td class="memname">#define CB_TYPE_DR   0</td>
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<p class="definition">Definition at line <a class="el" href="cb__algs_8h_source.html#l00013">13</a> of file <a class="el" href="cb__algs_8h_source.html">cb_algs.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="cb__adf_8cc_source.html#l00481">cb_adf_setup()</a>, <a class="el" href="cb__algs_8cc_source.html#l00132">cb_algs_setup()</a>, <a class="el" href="cb__explore_8cc_source.html#l00274">cb_explore_setup()</a>, <a class="el" href="cb__adf_8cc_source.html#l00295">CB_ADF::cb_adf::do_actual_learning()</a>, <a class="el" href="gen__cs__example_8h_source.html#l00167">GEN_CS::gen_cs_example()</a>, and <a class="el" href="cb__explore__adf__cover_8cc_source.html#l00174">VW::cb_explore_adf::cover::setup()</a>.</p>
</div>
</div>
<a id="add10d6d9805928a8c3c453c9d0d622d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#add10d6d9805928a8c3c453c9d0d622d4">◆ </a></span>CB_TYPE_IPS</h2>
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<td class="memname">#define CB_TYPE_IPS   2</td>
</tr>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="cb__algs_8h_source.html#l00015">15</a> of file <a class="el" href="cb__algs_8h_source.html">cb_algs.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="cb__adf_8cc_source.html#l00481">cb_adf_setup()</a>, <a class="el" href="cb__algs_8cc_source.html#l00132">cb_algs_setup()</a>, <a class="el" href="cb__adf_8cc_source.html#l00295">CB_ADF::cb_adf::do_actual_learning()</a>, <a class="el" href="gen__cs__example_8h_source.html#l00167">GEN_CS::gen_cs_example()</a>, and <a class="el" href="cb__explore__adf__cover_8cc_source.html#l00174">VW::cb_explore_adf::cover::setup()</a>.</p>
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</div>
<a id="ad6cb5549c545c341e66f7605e5fec984"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad6cb5549c545c341e66f7605e5fec984">◆ </a></span>CB_TYPE_MTR</h2>
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<td class="memname">#define CB_TYPE_MTR   3</td>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="cb__algs_8h_source.html#l00016">16</a> of file <a class="el" href="cb__algs_8h_source.html">cb_algs.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="cb__adf_8cc_source.html#l00481">cb_adf_setup()</a>, <a class="el" href="cb__adf_8cc_source.html#l00295">CB_ADF::cb_adf::do_actual_learning()</a>, <a class="el" href="gen__cs__example_8h_source.html#l00232">GEN_CS::gen_cs_example()</a>, <a class="el" href="cb__explore__adf__cover_8cc_source.html#l00063">VW::cb_explore_adf::cover::cb_explore_adf_cover::predict_or_learn_impl()</a>, and <a class="el" href="cb__explore__adf__cover_8cc_source.html#l00174">VW::cb_explore_adf::cover::setup()</a>.</p>
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<a id="a4a3a09d8d2450634ade74b717e0b356d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4a3a09d8d2450634ade74b717e0b356d">◆ </a></span>CB_TYPE_SM</h2>
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<td class="memname">#define CB_TYPE_SM   4</td>
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<p class="definition">Definition at line <a class="el" href="cb__algs_8h_source.html#l00017">17</a> of file <a class="el" href="cb__algs_8h_source.html">cb_algs.h</a>.</p>
<p class="reference">Referenced by <a class="el" href="cb__adf_8cc_source.html#l00481">cb_adf_setup()</a>, and <a class="el" href="cb__adf_8cc_source.html#l00295">CB_ADF::cb_adf::do_actual_learning()</a>.</p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="a2b2e9ee0945ab577ddb1ad8b94d2c7cf"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2b2e9ee0945ab577ddb1ad8b94d2c7cf">◆ </a></span>cb_algs_setup()</h2>
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<td class="memname"><a class="el" href="namespaceLEARNER.html#a807843d5185e0c5005a54bf28c111c79">LEARNER::base_learner</a>* cb_algs_setup </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structVW_1_1config_1_1options__i.html">VW::config::options_i</a> & </td>
<td class="paramname"><em>options</em>, </td>
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<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>
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<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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</div><div class="memdoc">
<p class="definition">Definition at line <a class="el" href="cb__algs_8cc_source.html#l00132">132</a> of file <a class="el" href="cb__algs_8cc_source.html">cb_algs.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="rand48_8cc_source.html#l00012">c</a>, <a class="el" href="global__data_8h_source.html#l00346">label_type::cb</a>, <a class="el" href="cb_8cc_source.html#l00292">CB_EVAL::cb_eval</a>, <a class="el" href="global__data_8h_source.html#l00347">label_type::cb_eval</a>, <a class="el" href="cb_8cc_source.html#l00167">CB::cb_label</a>, <a class="el" href="gen__cs__example_8h_source.html#l00018">GEN_CS::cb_to_cs::cb_type</a>, <a class="el" href="cb__algs_8h_source.html#l00014">CB_TYPE_DM</a>, <a class="el" href="cb__algs_8h_source.html#l00013">CB_TYPE_DR</a>, <a class="el" href="cb__algs_8h_source.html#l00015">CB_TYPE_IPS</a>, <a class="el" href="cb__algs_8cc_source.html#l00125">CB_ALGS::eval_finish_example()</a>, <a class="el" href="cb__algs_8cc_source.html#l00119">CB_ALGS::finish_example()</a>, <a class="el" href="learner_8h_source.html#l00369">LEARNER::init_learner()</a>, <a class="el" href="structVW_1_1config_1_1options__i.html#a218ed8d8b6a9b367ce7dc622e1465f92">VW::config::options_i::insert()</a>, <a class="el" href="global__data_8h_source.html#l00550">vw::label_type</a>, <a class="el" href="cb__algs_8cc_source.html#l00077">CB_ALGS::learn_eval()</a>, <a class="el" href="parser_8h_source.html#l00102">parser::lp</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#l00024">prediction_type::multiclass</a>, <a class="el" href="global__data_8h_source.html#l00377">vw::p</a>, <a class="el" href="cb__algs_8cc_source.html#l00075">CB_ALGS::predict_eval()</a>, <a class="el" href="gen__cs__example_8h_source.html#l00021">GEN_CS::cb_to_cs::scorer</a>, <a class="el" href="global__data_8h_source.html#l00384">vw::scorer</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>, <a class="el" href="vw__exception_8h_source.html#l00181">THROW</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="l00133"></a><span class="lineno"> 133</span> {</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">auto</span> data = scoped_calloc_or_throw<cb>();</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  std::string type_string = <span class="stringliteral">"dr"</span>;</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordtype">bool</span> eval = <span class="keyword">false</span>;</div><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>  <a class="code" href="structVW_1_1config_1_1option__group__definition.html">option_group_definition</a> new_options(<span class="stringliteral">"Contextual Bandit Options"</span>);</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  new_options</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  .add(<a class="code" href="namespaceVW_1_1config.html#ae768389a49d24d07215612b2f824d520">make_option</a>(<span class="stringliteral">"cb"</span>, data->cbcs.num_actions).keep().help(<span class="stringliteral">"Use contextual bandit learning with <k> costs"</span>))</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</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">"cb_type"</span>, type_string).keep().help(<span class="stringliteral">"contextual bandit method to use in {ips,dm,dr}"</span>))</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</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">"eval"</span>, eval).help(<span class="stringliteral">"Evaluate a policy rather than optimizing."</span>));</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</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="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</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">"cb"</span>))</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// Ensure serialization of this option in all cases.</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</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">"cb_type"</span>))</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  options.<a class="code" href="structVW_1_1config_1_1options__i.html#a218ed8d8b6a9b367ce7dc622e1465f92">insert</a>(<span class="stringliteral">"cb_type"</span>, type_string);</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</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="l00153"></a><span class="lineno"> 153</span>  }</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>  <a class="code" href="structGEN__CS_1_1cb__to__cs.html">cb_to_cs</a>& <a class="code" href="rand48_8cc.html#a031471c12305ed3905230e6f1c6efcb1">c</a> = data->cbcs;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">size_t</span> problem_multiplier = 2; <span class="comment">// default for DR</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (type_string.compare(<span class="stringliteral">"dr"</span>) == 0)</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  c.<a class="code" href="structGEN__CS_1_1cb__to__cs.html#a4a94f22628a700aeb8cd11c1b850089d">cb_type</a> = <a class="code" href="cb__algs_8h.html#a83cbf768330207512fd8b3b710cd24e1">CB_TYPE_DR</a>;</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">else</span> if (type_string.compare(<span class="stringliteral">"dm"</span>) == 0)</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (eval)</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="vw__exception_8h.html#a6418ba1768107875abafe9a0b6b8b2ad">THROW</a>(<span class="stringliteral">"direct method can not be used for evaluation --- it is biased."</span>);</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  c.<a class="code" href="structGEN__CS_1_1cb__to__cs.html#a4a94f22628a700aeb8cd11c1b850089d">cb_type</a> = <a class="code" href="cb__algs_8h.html#a65bcc744db15fb2d325d39d571f09498">CB_TYPE_DM</a>;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  problem_multiplier = 1;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (type_string.compare(<span class="stringliteral">"ips"</span>) == 0)</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>  c.<a class="code" href="structGEN__CS_1_1cb__to__cs.html#a4a94f22628a700aeb8cd11c1b850089d">cb_type</a> = <a class="code" href="cb__algs_8h.html#add10d6d9805928a8c3c453c9d0d622d4">CB_TYPE_IPS</a>;</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  problem_multiplier = 1;</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">else</span></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>  std::cerr << <span class="stringliteral">"warning: cb_type must be in {'ips','dm','dr'}; resetting to dr."</span> << std::endl;</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  c.<a class="code" href="structGEN__CS_1_1cb__to__cs.html#a4a94f22628a700aeb8cd11c1b850089d">cb_type</a> = <a class="code" href="cb__algs_8h.html#a83cbf768330207512fd8b3b710cd24e1">CB_TYPE_DR</a>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</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">"csoaa"</span>))</div><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>  std::stringstream ss;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  ss << data->cbcs.num_actions;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  options.<a class="code" href="structVW_1_1config_1_1options__i.html#a218ed8d8b6a9b367ce7dc622e1465f92">insert</a>(<span class="stringliteral">"csoaa"</span>, ss.str());</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</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>  <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="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">if</span> (eval)</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>  all.<a class="code" href="structvw.html#ab70afa2ceae01968d9d291c5c8b060be">p</a>-><a class="code" href="structparser.html#af15b434af656966700c94a50a92c4fcd">lp</a> = <a class="code" href="namespaceCB__EVAL.html#a3da28c9440893fd231a6a6e49aca97c2">CB_EVAL::cb_eval</a>;</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  all.<a class="code" href="structvw.html#a829a247c3db141738399a1ee291be358">label_type</a> = <a class="code" href="namespacelabel__type.html#ab01c0265613aa8243d7235a101924b75adbbf385aa4fdfc939b905a68fca2d5aa">label_type::cb_eval</a>;</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  {</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  all.<a class="code" href="structvw.html#ab70afa2ceae01968d9d291c5c8b060be">p</a>-><a class="code" href="structparser.html#af15b434af656966700c94a50a92c4fcd">lp</a> = <a class="code" href="namespaceCB.html#a53f211db30bb394a7e31aca72a7f4ff7">CB::cb_label</a>;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  all.<a class="code" href="structvw.html#a829a247c3db141738399a1ee291be358">label_type</a> = <a class="code" href="namespacelabel__type.html#ab01c0265613aa8243d7235a101924b75a080303f91fca5c6b7a11c28c16184e93">label_type::cb</a>;</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  }</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>  <a class="code" href="structLEARNER_1_1learner.html">learner<cb, example></a>* l;</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">if</span> (eval)</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  l = &<a class="code" href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">init_learner</a>(data, base, <a class="code" href="namespaceCB__ALGS.html#a879a96d9c6557d2469b3b243494f3692">learn_eval</a>, <a class="code" href="namespaceCB__ALGS.html#a4a49ac6588b3230a55d89caf7829bb78">predict_eval</a>, problem_multiplier, <a class="code" href="namespaceprediction__type.html#a26cd84fb4803ed5518dbe3e22a78732ba02c7d4896812be15866581cbd3f93fbc">prediction_type::multiclass</a>);</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  l-><a class="code" href="structLEARNER_1_1learner.html#a459cdbfe2232f11e6c73933961af97e1">set_finish_example</a>(<a class="code" href="namespaceCB__ALGS.html#a46181b4cf77f2b8c15403e6fc3d7e3a3">eval_finish_example</a>);</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">else</span></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>  l = &<a class="code" href="namespaceLEARNER.html#a46de7ca84ed37d7b45dc7db64420b978">init_learner</a>(</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  data, base, predict_or_learn<true>, predict_or_learn<false>, problem_multiplier, <a class="code" href="namespaceprediction__type.html#a26cd84fb4803ed5518dbe3e22a78732ba02c7d4896812be15866581cbd3f93fbc">prediction_type::multiclass</a>);</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  l-><a class="code" href="structLEARNER_1_1learner.html#a459cdbfe2232f11e6c73933961af97e1">set_finish_example</a>(<a class="code" href="namespaceCB__ALGS.html#a430ebf424885397573f8d6b91c58ff44">finish_example</a>);</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>  c.<a class="code" href="structGEN__CS_1_1cb__to__cs.html#a6148b9ece5c875a783a78db0159a29d0">scorer</a> = all.<a class="code" href="structvw.html#aa147fa0e8ddbe1955c4cac146c7267f5">scorer</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">return</span> <a class="code" href="namespaceLEARNER.html#abcf6bdc2fa5e38928c33212e20dbbd74">make_base</a>(*l);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> }</div><div class="ttc" id="namespaceCB__EVAL_html_a3da28c9440893fd231a6a6e49aca97c2"><div class="ttname"><a href="namespaceCB__EVAL.html#a3da28c9440893fd231a6a6e49aca97c2">CB_EVAL::cb_eval</a></div><div class="ttdeci">label_parser cb_eval</div><div class="ttdef"><b>Definition:</b> <a href="cb_8cc_source.html#l00292">cb.cc:292</a></div></div>
<div class="ttc" id="cb__algs_8h_html_add10d6d9805928a8c3c453c9d0d622d4"><div class="ttname"><a href="cb__algs_8h.html#add10d6d9805928a8c3c453c9d0d622d4">CB_TYPE_IPS</a></div><div class="ttdeci">#define CB_TYPE_IPS</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8h_source.html#l00015">cb_algs.h:15</a></div></div>
<div class="ttc" id="namespaceCB__ALGS_html_a430ebf424885397573f8d6b91c58ff44"><div class="ttname"><a href="namespaceCB__ALGS.html#a430ebf424885397573f8d6b91c58ff44">CB_ALGS::finish_example</a></div><div class="ttdeci">void finish_example(vw &all, cb &c, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8cc_source.html#l00119">cb_algs.cc:119</a></div></div>
<div class="ttc" id="structvw_html_a829a247c3db141738399a1ee291be358"><div class="ttname"><a href="structvw.html#a829a247c3db141738399a1ee291be358">vw::label_type</a></div><div class="ttdeci">label_type::label_type_t label_type</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00550">global_data.h:550</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="cb__algs_8h_html_a65bcc744db15fb2d325d39d571f09498"><div class="ttname"><a href="cb__algs_8h.html#a65bcc744db15fb2d325d39d571f09498">CB_TYPE_DM</a></div><div class="ttdeci">#define CB_TYPE_DM</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8h_source.html#l00014">cb_algs.h:14</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="namespaceCB__ALGS_html_a879a96d9c6557d2469b3b243494f3692"><div class="ttname"><a href="namespaceCB__ALGS.html#a879a96d9c6557d2469b3b243494f3692">CB_ALGS::learn_eval</a></div><div class="ttdeci">void learn_eval(cb &data, single_learner &, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8cc_source.html#l00077">cb_algs.cc:77</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="namespaceprediction__type_html_a26cd84fb4803ed5518dbe3e22a78732ba02c7d4896812be15866581cbd3f93fbc"><div class="ttname"><a href="namespaceprediction__type.html#a26cd84fb4803ed5518dbe3e22a78732ba02c7d4896812be15866581cbd3f93fbc">prediction_type::multiclass</a></div><div class="ttdef"><b>Definition:</b> <a href="learner_8h_source.html#l00024">learner.h:24</a></div></div>
<div class="ttc" id="cb__algs_8h_html_a83cbf768330207512fd8b3b710cd24e1"><div class="ttname"><a href="cb__algs_8h.html#a83cbf768330207512fd8b3b710cd24e1">CB_TYPE_DR</a></div><div class="ttdeci">#define CB_TYPE_DR</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8h_source.html#l00013">cb_algs.h:13</a></div></div>
<div class="ttc" id="structvw_html_ab70afa2ceae01968d9d291c5c8b060be"><div class="ttname"><a href="structvw.html#ab70afa2ceae01968d9d291c5c8b060be">vw::p</a></div><div class="ttdeci">parser * p</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00377">global_data.h:377</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="namespacelabel__type_html_ab01c0265613aa8243d7235a101924b75adbbf385aa4fdfc939b905a68fca2d5aa"><div class="ttname"><a href="namespacelabel__type.html#ab01c0265613aa8243d7235a101924b75adbbf385aa4fdfc939b905a68fca2d5aa">label_type::cb_eval</a></div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00347">global_data.h:347</a></div></div>
<div class="ttc" id="namespaceCB__ALGS_html_a4a49ac6588b3230a55d89caf7829bb78"><div class="ttname"><a href="namespaceCB__ALGS.html#a4a49ac6588b3230a55d89caf7829bb78">CB_ALGS::predict_eval</a></div><div class="ttdeci">void predict_eval(cb &, single_learner &, example &)</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8cc_source.html#l00075">cb_algs.cc:75</a></div></div>
<div class="ttc" id="structGEN__CS_1_1cb__to__cs_html"><div class="ttname"><a href="structGEN__CS_1_1cb__to__cs.html">GEN_CS::cb_to_cs</a></div><div class="ttdef"><b>Definition:</b> <a href="gen__cs__example_8h_source.html#l00016">gen_cs_example.h:16</a></div></div>
<div class="ttc" id="structGEN__CS_1_1cb__to__cs_html_a6148b9ece5c875a783a78db0159a29d0"><div class="ttname"><a href="structGEN__CS_1_1cb__to__cs.html#a6148b9ece5c875a783a78db0159a29d0">GEN_CS::cb_to_cs::scorer</a></div><div class="ttdeci">LEARNER::single_learner * scorer</div><div class="ttdef"><b>Definition:</b> <a href="gen__cs__example_8h_source.html#l00021">gen_cs_example.h:21</a></div></div>
<div class="ttc" id="structvw_html_aa147fa0e8ddbe1955c4cac146c7267f5"><div class="ttname"><a href="structvw.html#aa147fa0e8ddbe1955c4cac146c7267f5">vw::scorer</a></div><div class="ttdeci">LEARNER::single_learner * scorer</div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00384">global_data.h:384</a></div></div>
<div class="ttc" id="structVW_1_1config_1_1options__i_html_a218ed8d8b6a9b367ce7dc622e1465f92"><div class="ttname"><a href="structVW_1_1config_1_1options__i.html#a218ed8d8b6a9b367ce7dc622e1465f92">VW::config::options_i::insert</a></div><div class="ttdeci">virtual void insert(const std::string &key, const std::string &value)=0</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="namespaceCB_html_a53f211db30bb394a7e31aca72a7f4ff7"><div class="ttname"><a href="namespaceCB.html#a53f211db30bb394a7e31aca72a7f4ff7">CB::cb_label</a></div><div class="ttdeci">label_parser cb_label</div><div class="ttdef"><b>Definition:</b> <a href="cb_8cc_source.html#l00167">cb.cc:167</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="namespaceCB__ALGS_html_a46181b4cf77f2b8c15403e6fc3d7e3a3"><div class="ttname"><a href="namespaceCB__ALGS.html#a46181b4cf77f2b8c15403e6fc3d7e3a3">CB_ALGS::eval_finish_example</a></div><div class="ttdeci">void eval_finish_example(vw &all, cb &c, example &ec)</div><div class="ttdef"><b>Definition:</b> <a href="cb__algs_8cc_source.html#l00125">cb_algs.cc:125</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="namespacelabel__type_html_ab01c0265613aa8243d7235a101924b75a080303f91fca5c6b7a11c28c16184e93"><div class="ttname"><a href="namespacelabel__type.html#ab01c0265613aa8243d7235a101924b75a080303f91fca5c6b7a11c28c16184e93">label_type::cb</a></div><div class="ttdef"><b>Definition:</b> <a href="global__data_8h_source.html#l00346">global_data.h:346</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="rand48_8cc_html_a031471c12305ed3905230e6f1c6efcb1"><div class="ttname"><a href="rand48_8cc.html#a031471c12305ed3905230e6f1c6efcb1">c</a></div><div class="ttdeci">constexpr uint64_t c</div><div class="ttdef"><b>Definition:</b> <a href="rand48_8cc_source.html#l00012">rand48.cc:12</a></div></div>
<div class="ttc" id="structparser_html_af15b434af656966700c94a50a92c4fcd"><div class="ttname"><a href="structparser.html#af15b434af656966700c94a50a92c4fcd">parser::lp</a></div><div class="ttdeci">label_parser lp</div><div class="ttdef"><b>Definition:</b> <a href="parser_8h_source.html#l00102">parser.h:102</a></div></div>
<div class="ttc" id="structGEN__CS_1_1cb__to__cs_html_a4a94f22628a700aeb8cd11c1b850089d"><div class="ttname"><a href="structGEN__CS_1_1cb__to__cs.html#a4a94f22628a700aeb8cd11c1b850089d">GEN_CS::cb_to_cs::cb_type</a></div><div class="ttdeci">size_t cb_type</div><div class="ttdef"><b>Definition:</b> <a href="gen__cs__example_8h_source.html#l00018">gen_cs_example.h:18</a></div></div>
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