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<li class="navelem"><a class="el" href="namespacemxnet.html">mxnet</a></li><li class="navelem"><a class="el" href="namespacemxnet_1_1cpp.html">cpp</a></li><li class="navelem"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html">Executor</a></li> </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<div class="title">mxnet::cpp::Executor Class Reference</div> </div>
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<p><a class="el" href="classmxnet_1_1cpp_1_1Executor.html" title="Executor interface. ">Executor</a> interface.
<a href="classmxnet_1_1cpp_1_1Executor.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="cpp-package_2include_2mxnet-cpp_2executor_8h_source.html">executor.h</a>&gt;</code></p>
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Collaboration diagram for mxnet::cpp::Executor:</div>
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Public Member Functions</h2></td></tr>
<tr class="memitem:a86cd99024edf91d7554f28c5e128dc7e"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a86cd99024edf91d7554f28c5e128dc7e">Executor</a> (const <a class="el" href="classmxnet_1_1cpp_1_1Symbol.html">Symbol</a> &amp;symbol, <a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a> context, const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;<a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a13d04b04cfafce126946be071549ace9">arg_arrays</a>, const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;<a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a42694f583467b2b517ea8f8c0250655b">grad_arrays</a>, const std::vector&lt; <a class="el" href="namespacemxnet_1_1cpp.html#ae1e49a337d45c7071defefda2ec91845">OpReqType</a> &gt; &amp;grad_reqs, const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;<a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a11cc4c29bb7d5f859e9bbb4bc0df51ab">aux_arrays</a>, const std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a> &gt; &amp;group_to_ctx=std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a> &gt;(), <a class="el" href="classmxnet_1_1cpp_1_1Executor.html">Executor</a> *shared_exec=nullptr)</td></tr>
<tr class="separator:a86cd99024edf91d7554f28c5e128dc7e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aefeb9bc416efd9aa6547e746d54724c1"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#aefeb9bc416efd9aa6547e746d54724c1">Executor</a> (const <a class="el" href="include_2mxnet_2c__api_8h.html#a6f224ee35892507405ced8429d874726">ExecutorHandle</a> &amp;h)</td></tr>
<tr class="separator:aefeb9bc416efd9aa6547e746d54724c1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1fef41367238aaf8315fe5715a9f8f47"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a1fef41367238aaf8315fe5715a9f8f47">Forward</a> (bool is_train)</td></tr>
<tr class="memdesc:a1fef41367238aaf8315fe5715a9f8f47"><td class="mdescLeft">&#160;</td><td class="mdescRight">Perform a Forward operation of <a class="el" href="classmxnet_1_1cpp_1_1Operator.html" title="Operator interface. ">Operator</a> After this operation, user can get the result by using function head. <a href="#a1fef41367238aaf8315fe5715a9f8f47">More...</a><br /></td></tr>
<tr class="separator:a1fef41367238aaf8315fe5715a9f8f47"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abd98fc4f87cd8adea049a31a840898e4"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#abd98fc4f87cd8adea049a31a840898e4">Backward</a> (const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;head_grads=std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;())</td></tr>
<tr class="memdesc:abd98fc4f87cd8adea049a31a840898e4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Perform a Backward operation of the <a class="el" href="classmxnet_1_1cpp_1_1Operator.html" title="Operator interface. ">Operator</a>. This must be called after Forward. After this operation, NDArrays specified by grad_in_args_store will be updated accordingly. User is allowed to pass in an empty <a class="el" href="classmxnet_1_1Array.html" title="Array container of NodeRef in DSL graph. Array implements copy on write semantics, which means array is mutable but copy will happen when array is referenced in more than two places. ">Array</a> if the head node is loss function and head gradeitn is not needed. <a href="#abd98fc4f87cd8adea049a31a840898e4">More...</a><br /></td></tr>
<tr class="separator:abd98fc4f87cd8adea049a31a840898e4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa4e594bc8b840f03c148aa84c472cb99"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#aa4e594bc8b840f03c148aa84c472cb99">Reshape</a> ()</td></tr>
<tr class="separator:aa4e594bc8b840f03c148aa84c472cb99"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa9ffb2228d9a552a43277704dcf2ad64"><td class="memItemLeft" align="right" valign="top">std::string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#aa9ffb2228d9a552a43277704dcf2ad64">DebugStr</a> ()</td></tr>
<tr class="memdesc:aa9ffb2228d9a552a43277704dcf2ad64"><td class="mdescLeft">&#160;</td><td class="mdescRight">update the arguments with given learning rate and optimizer <a href="#aa9ffb2228d9a552a43277704dcf2ad64">More...</a><br /></td></tr>
<tr class="separator:aa9ffb2228d9a552a43277704dcf2ad64"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad6a26ffaabff769ee829221ef47e29e6"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#ad6a26ffaabff769ee829221ef47e29e6">~Executor</a> ()</td></tr>
<tr class="memdesc:ad6a26ffaabff769ee829221ef47e29e6"><td class="mdescLeft">&#160;</td><td class="mdescRight">destructor, free the handle <a href="#ad6a26ffaabff769ee829221ef47e29e6">More...</a><br /></td></tr>
<tr class="separator:ad6a26ffaabff769ee829221ef47e29e6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a942ef73436ecb2bcfde588e004037963"><td class="memItemLeft" align="right" valign="top">std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a942ef73436ecb2bcfde588e004037963">arg_dict</a> ()</td></tr>
<tr class="separator:a942ef73436ecb2bcfde588e004037963"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4ca4e8a5517ac2a35824adda6c80f872"><td class="memItemLeft" align="right" valign="top">std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a4ca4e8a5517ac2a35824adda6c80f872">grad_dict</a> ()</td></tr>
<tr class="separator:a4ca4e8a5517ac2a35824adda6c80f872"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6c6ef2d2f79c26fd0bad949243f7a37a"><td class="memItemLeft" align="right" valign="top">std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a6c6ef2d2f79c26fd0bad949243f7a37a">aux_dict</a> ()</td></tr>
<tr class="separator:a6c6ef2d2f79c26fd0bad949243f7a37a"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr class="memitem:a13d04b04cfafce126946be071549ace9"><td class="memItemLeft" align="right" valign="top">std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a13d04b04cfafce126946be071549ace9">arg_arrays</a></td></tr>
<tr class="separator:a13d04b04cfafce126946be071549ace9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a42694f583467b2b517ea8f8c0250655b"><td class="memItemLeft" align="right" valign="top">std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a42694f583467b2b517ea8f8c0250655b">grad_arrays</a></td></tr>
<tr class="separator:a42694f583467b2b517ea8f8c0250655b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a11cc4c29bb7d5f859e9bbb4bc0df51ab"><td class="memItemLeft" align="right" valign="top">std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a11cc4c29bb7d5f859e9bbb4bc0df51ab">aux_arrays</a></td></tr>
<tr class="separator:a11cc4c29bb7d5f859e9bbb4bc0df51ab"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac8da23a16e33e0e75a44f803cd3b7933"><td class="memItemLeft" align="right" valign="top">std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#ac8da23a16e33e0e75a44f803cd3b7933">outputs</a></td></tr>
<tr class="memdesc:ac8da23a16e33e0e75a44f803cd3b7933"><td class="mdescLeft">&#160;</td><td class="mdescRight">arrays store the outputs of forward <a href="#ac8da23a16e33e0e75a44f803cd3b7933">More...</a><br /></td></tr>
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Friends</h2></td></tr>
<tr class="memitem:a1aceee49824f6ba6ea0d4b26a8ebe1d4"><td class="memItemLeft" align="right" valign="top">class&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html#a1aceee49824f6ba6ea0d4b26a8ebe1d4">Monitor</a></td></tr>
<tr class="separator:a1aceee49824f6ba6ea0d4b26a8ebe1d4"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p><a class="el" href="classmxnet_1_1cpp_1_1Executor.html" title="Executor interface. ">Executor</a> interface. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a86cd99024edf91d7554f28c5e128dc7e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a86cd99024edf91d7554f28c5e128dc7e">&#9670;&nbsp;</a></span>Executor() <span class="overload">[1/2]</span></h2>
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<td class="memname">mxnet::cpp::Executor::Executor </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classmxnet_1_1cpp_1_1Symbol.html">Symbol</a> &amp;&#160;</td>
<td class="paramname"><em>symbol</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a>&#160;</td>
<td class="paramname"><em>context</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>arg_arrays</em>, </td>
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<td class="paramtype">const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>grad_arrays</em>, </td>
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<td class="paramtype">const std::vector&lt; <a class="el" href="namespacemxnet_1_1cpp.html#ae1e49a337d45c7071defefda2ec91845">OpReqType</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>grad_reqs</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const std::vector&lt; <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>aux_arrays</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">const std::map&lt; std::string, <a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a> &gt; &amp;&#160;</td>
<td class="paramname"><em>group_to_ctx</em> = <code>std::map&lt;&#160;std::string,&#160;<a class="el" href="classmxnet_1_1cpp_1_1Context.html">Context</a>&#160;&gt;()</code>, </td>
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<td class="paramtype"><a class="el" href="classmxnet_1_1cpp_1_1Executor.html">Executor</a> *&#160;</td>
<td class="paramname"><em>shared_exec</em> = <code>nullptr</code>&#160;</td>
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<td>)</td>
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<a id="aefeb9bc416efd9aa6547e746d54724c1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aefeb9bc416efd9aa6547e746d54724c1">&#9670;&nbsp;</a></span>Executor() <span class="overload">[2/2]</span></h2>
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<td class="memname">mxnet::cpp::Executor::Executor </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="include_2mxnet_2c__api_8h.html#a6f224ee35892507405ced8429d874726">ExecutorHandle</a> &amp;&#160;</td>
<td class="paramname"><em>h</em></td><td>)</td>
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<h2 class="memtitle"><span class="permalink"><a href="#ad6a26ffaabff769ee829221ef47e29e6">&#9670;&nbsp;</a></span>~Executor()</h2>
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<td class="memname">mxnet::cpp::Executor::~Executor </td>
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<p>destructor, free the handle </p>
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<h2 class="groupheader">Member Function Documentation</h2>
<a id="a942ef73436ecb2bcfde588e004037963"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a942ef73436ecb2bcfde588e004037963">&#9670;&nbsp;</a></span>arg_dict()</h2>
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<td class="memname">std::map&lt;std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::arg_dict </td>
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<h2 class="memtitle"><span class="permalink"><a href="#a6c6ef2d2f79c26fd0bad949243f7a37a">&#9670;&nbsp;</a></span>aux_dict()</h2>
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<td class="memname">std::map&lt;std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::aux_dict </td>
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<h2 class="memtitle"><span class="permalink"><a href="#abd98fc4f87cd8adea049a31a840898e4">&#9670;&nbsp;</a></span>Backward()</h2>
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<td class="memname">void mxnet::cpp::Executor::Backward </td>
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<td class="paramname"><em>head_grads</em> = <code>std::vector&lt;<a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt;()</code></td><td>)</td>
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<p>Perform a Backward operation of the <a class="el" href="classmxnet_1_1cpp_1_1Operator.html" title="Operator interface. ">Operator</a>. This must be called after Forward. After this operation, NDArrays specified by grad_in_args_store will be updated accordingly. User is allowed to pass in an empty <a class="el" href="classmxnet_1_1Array.html" title="Array container of NodeRef in DSL graph. Array implements copy on write semantics, which means array is mutable but copy will happen when array is referenced in more than two places. ">Array</a> if the head node is loss function and head gradeitn is not needed. </p>
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<tr><td class="paramname">head_grads</td><td>the gradient of head nodes to be backproped. </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#aa9ffb2228d9a552a43277704dcf2ad64">&#9670;&nbsp;</a></span>DebugStr()</h2>
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<p>update the arguments with given learning rate and optimizer </p>
<dl class="section return"><dt>Returns</dt><dd>the SymbolHandle </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a1fef41367238aaf8315fe5715a9f8f47">&#9670;&nbsp;</a></span>Forward()</h2>
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<td class="memname">void mxnet::cpp::Executor::Forward </td>
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<p>Perform a Forward operation of <a class="el" href="classmxnet_1_1cpp_1_1Operator.html" title="Operator interface. ">Operator</a> After this operation, user can get the result by using function head. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a4ca4e8a5517ac2a35824adda6c80f872">&#9670;&nbsp;</a></span>grad_dict()</h2>
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<td class="memname">std::map&lt;std::string, <a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::grad_dict </td>
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<h2 class="memtitle"><span class="permalink"><a href="#aa4e594bc8b840f03c148aa84c472cb99">&#9670;&nbsp;</a></span>Reshape()</h2>
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<td class="memname">void mxnet::cpp::Executor::Reshape </td>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a1aceee49824f6ba6ea0d4b26a8ebe1d4">&#9670;&nbsp;</a></span>Monitor</h2>
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<td class="memname">friend class <a class="el" href="classmxnet_1_1cpp_1_1Monitor.html">Monitor</a></td>
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<span class="mlabels"><span class="mlabel">friend</span></span> </td>
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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a13d04b04cfafce126946be071549ace9">&#9670;&nbsp;</a></span>arg_arrays</h2>
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<td class="memname">std::vector&lt;<a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::arg_arrays</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a11cc4c29bb7d5f859e9bbb4bc0df51ab">&#9670;&nbsp;</a></span>aux_arrays</h2>
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<td class="memname">std::vector&lt;<a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::aux_arrays</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a42694f583467b2b517ea8f8c0250655b">&#9670;&nbsp;</a></span>grad_arrays</h2>
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<td class="memname">std::vector&lt;<a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::grad_arrays</td>
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<h2 class="memtitle"><span class="permalink"><a href="#ac8da23a16e33e0e75a44f803cd3b7933">&#9670;&nbsp;</a></span>outputs</h2>
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<td class="memname">std::vector&lt;<a class="el" href="classmxnet_1_1cpp_1_1NDArray.html">NDArray</a>&gt; mxnet::cpp::Executor::outputs</td>
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<p>arrays store the outputs of forward </p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>/work/mxnet/cpp-package/include/mxnet-cpp/<a class="el" href="cpp-package_2include_2mxnet-cpp_2executor_8h_source.html">executor.h</a></li>
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