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<a href="#pub-methods">Public Member Functions</a> &#124;
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  <div class="headertitle"><div class="title">Layer::Layer Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div></div>
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<p><code>#include &lt;<a class="el" href="layer_8hpp_source.html">layer.hpp</a>&gt;</code></p>
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Inheritance diagram for Layer::Layer:</div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="pub-methods" name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ac4ff1e869c508087bcf998899908be1a"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#ac4ff1e869c508087bcf998899908be1a">Layer</a> (size_t <a class="el" href="class_layer_1_1_layer.html#a99d315d8bcc460de6feba4bdac77766c">n</a>, size_t <a class="el" href="class_layer_1_1_layer.html#a8d294cb3fc3d2970a2895ad8298d2e4d">m</a>)</td></tr>
<tr class="separator:ac4ff1e869c508087bcf998899908be1a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a032af2375e6bae4de0f7649b31a62318"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a032af2375e6bae4de0f7649b31a62318">~Layer</a> ()</td></tr>
<tr class="separator:a032af2375e6bae4de0f7649b31a62318"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8db0801eb0439cd0a0004f3787d512f3"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a8db0801eb0439cd0a0004f3787d512f3">get_input_size</a> () const</td></tr>
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<tr class="memitem:afe6a48cc987b246fc470082ffe58d932"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#afe6a48cc987b246fc470082ffe58d932">get_output_size</a> () const</td></tr>
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<tr class="memitem:a5c9d2349c49234c1d29cdacd046788fa"><td class="memItemLeft" align="right" valign="top"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a5c9d2349c49234c1d29cdacd046788fa">get_output</a> () const</td></tr>
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<tr class="memitem:aeb5b92a01bc4e867d347bff4767e919f"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#aeb5b92a01bc4e867d347bff4767e919f">feed_forward</a> (<a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> <a class="el" href="class_layer_1_1_layer.html#af2ebcf019bc0e4b97f41fc9205706665">x</a>)=0</td></tr>
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<tr class="memitem:a87dbd5d1c1091769ba285084bd3513e7"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a87dbd5d1c1091769ba285084bd3513e7">init_nabla</a> ()=0</td></tr>
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<tr class="memitem:ad9e2853fce56b014b1e9de5097e21dbd"><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#ad9e2853fce56b014b1e9de5097e21dbd">back_propagation</a> (<a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> e)=0</td></tr>
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<tr class="memitem:a8f0801b946b94dfe856c57a632c9998f"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a8f0801b946b94dfe856c57a632c9998f">update</a> (<a class="el" href="vector_8hpp.html#a4b04262b81aa7d31eb5d2f607e2a35de">Real</a> eta)=0</td></tr>
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Public Attributes</h2></td></tr>
<tr class="memitem:a4c1dfb78f590b010a7a1e11706eb12f5"><td class="memItemLeft" align="right" valign="top">string&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a4c1dfb78f590b010a7a1e11706eb12f5">name</a></td></tr>
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<tr class="memitem:a8d294cb3fc3d2970a2895ad8298d2e4d"><td class="memItemLeft" align="right" valign="top">size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#a8d294cb3fc3d2970a2895ad8298d2e4d">m</a></td></tr>
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<tr class="memitem:af2ebcf019bc0e4b97f41fc9205706665"><td class="memItemLeft" align="right" valign="top"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#af2ebcf019bc0e4b97f41fc9205706665">x</a></td></tr>
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<tr class="memitem:acf6e43bdf3345739e8a2828a8c0606e7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#acf6e43bdf3345739e8a2828a8c0606e7">y</a></td></tr>
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<tr class="memitem:affe7f5de8693b4af67765a9286686d82"><td class="memItemLeft" align="right" valign="top"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_layer_1_1_layer.html#affe7f5de8693b4af67765a9286686d82">d</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p >An abstract class representing a layer of a deep network. Such a layer can be seen as a map </p><p class="formulaDsp">
\[ \begin{array}{rcl} f:\mathbb{R}^n&amp;\mapsto&amp;\mathbb{R}^m\\ x&amp;\to&amp;y \end{array} \]
</p>
<p>. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ac4ff1e869c508087bcf998899908be1a">&#9670;&nbsp;</a></span>Layer()</h2>

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<h2 class="memtitle"><span class="permalink"><a href="#a032af2375e6bae4de0f7649b31a62318">&#9670;&nbsp;</a></span>~Layer()</h2>

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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ad9e2853fce56b014b1e9de5097e21dbd">&#9670;&nbsp;</a></span>back_propagation()</h2>

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          <td class="memname">virtual <a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> Layer::Layer::back_propagation </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td>
          <td class="paramname"><em>e</em></td><td>)</td>
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<p >Apply back propagation algorithm on the delta output vector d. Used the input vector stored in x_in_ref during feedforward. Return a reference to the computed (and stored) input delta vector. Nabla vectors must be computed here. </p>

<p>Implemented in <a class="el" href="class_layer_1_1_activation_layer.html#aa946acde267d94523d12465ca8976ab9">Layer::ActivationLayer&lt; A &gt;</a>, <a class="el" href="class_layer_1_1_convolution_layer.html#a5ccdf83a1217d57678c8bedcecc43a2a">Layer::ConvolutionLayer</a>, <a class="el" href="class_layer_1_1_full_connected_layer.html#a60219f302828bdf5ae4206b9a346627f">Layer::FullConnectedLayer</a>, and <a class="el" href="class_layer_1_1_pooling.html#a3dc9bb1a69d3d7c2f627da9d2b737ac2">Layer::Pooling</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#aeb5b92a01bc4e867d347bff4767e919f">&#9670;&nbsp;</a></span>feed_forward()</h2>

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          <td class="memname">virtual <a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> Layer::Layer::feed_forward </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a>&#160;</td>
          <td class="paramname"><em>x</em></td><td>)</td>
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<p >Apply the layer to the input vector <code>x</code>. Vectors <code>x_in_ref</code> and <code>x_out</code> must be updated in consequence. Return a reference to x_out. </p>

<p>Implemented in <a class="el" href="class_layer_1_1_activation_layer.html#a9bc3eb83733b4ee5a4a3c5c50e794478">Layer::ActivationLayer&lt; A &gt;</a>, <a class="el" href="class_layer_1_1_convolution_layer.html#a8315ef1016d165f8986fb3d4c2b65276">Layer::ConvolutionLayer</a>, <a class="el" href="class_layer_1_1_full_connected_layer.html#aea3b894c5efa65676c877c48a66b65cd">Layer::FullConnectedLayer</a>, and <a class="el" href="class_layer_1_1_pooling.html#a91e5d2cfd897d0f196de969909c92afc">Layer::Pooling</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a8db0801eb0439cd0a0004f3787d512f3">&#9670;&nbsp;</a></span>get_input_size()</h2>

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<p >Return the input size. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a5c9d2349c49234c1d29cdacd046788fa">&#9670;&nbsp;</a></span>get_output()</h2>

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          <td class="memname"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> Layer::Layer::get_output </td>
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<p >Return a reference to the computed output vector. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#afe6a48cc987b246fc470082ffe58d932">&#9670;&nbsp;</a></span>get_output_size()</h2>

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<p >Return the output size. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a87dbd5d1c1091769ba285084bd3513e7">&#9670;&nbsp;</a></span>init_nabla()</h2>

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<p >Initialize nabla vectors which are used during gradient descent. </p>

<p>Implemented in <a class="el" href="class_layer_1_1_activation_layer.html#a230ad43fde65528cc36021e097f111a4">Layer::ActivationLayer&lt; A &gt;</a>, <a class="el" href="class_layer_1_1_convolution_layer.html#a435dfabf3e575ddf07a11304e2d4fe84">Layer::ConvolutionLayer</a>, <a class="el" href="class_layer_1_1_full_connected_layer.html#afd7c08ff8b30bbfc217159188ef483c5">Layer::FullConnectedLayer</a>, and <a class="el" href="class_layer_1_1_pooling.html#a5c59ea7b198d3e42e334051f7a6e4645">Layer::Pooling</a>.</p>

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<h2 class="memtitle"><span class="permalink"><a href="#a8f0801b946b94dfe856c57a632c9998f">&#9670;&nbsp;</a></span>update()</h2>

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<p >Update layer parameters using gradient descent algorithm with learning rate eta. </p>

<p>Implemented in <a class="el" href="class_layer_1_1_activation_layer.html#afbc9f12d792008bbaf6d6c2d0177ebf1">Layer::ActivationLayer&lt; A &gt;</a>, <a class="el" href="class_layer_1_1_convolution_layer.html#a4764f42dfc31ad2d848e0d1c22b0704b">Layer::ConvolutionLayer</a>, <a class="el" href="class_layer_1_1_full_connected_layer.html#ab07a441a9cfead787120daea7193bc63">Layer::FullConnectedLayer</a>, and <a class="el" href="class_layer_1_1_pooling.html#ab04c4682d176b4bc760aee53c0ecc36a">Layer::Pooling</a>.</p>

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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#affe7f5de8693b4af67765a9286686d82">&#9670;&nbsp;</a></span>d</h2>

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          <td class="memname"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> Layer::Layer::d</td>
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<p >Computed input delta vector computed by back propagation algorithm. Owned by the layer. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a8d294cb3fc3d2970a2895ad8298d2e4d">&#9670;&nbsp;</a></span>m</h2>

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<p >Size of the output vector. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a99d315d8bcc460de6feba4bdac77766c">&#9670;&nbsp;</a></span>n</h2>

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<p >Size of the input vector. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#a4c1dfb78f590b010a7a1e11706eb12f5">&#9670;&nbsp;</a></span>name</h2>

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<p >The name of the layer. Used for debugging. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#af2ebcf019bc0e4b97f41fc9205706665">&#9670;&nbsp;</a></span>x</h2>

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<p >A reference to the input vector. </p>

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<h2 class="memtitle"><span class="permalink"><a href="#acf6e43bdf3345739e8a2828a8c0606e7">&#9670;&nbsp;</a></span>y</h2>

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          <td class="memname"><a class="el" href="vector_8hpp.html#ab9855a300a7759f4c0f85067d44e4c38">Vector</a> Layer::Layer::y</td>
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<p >Computed output vector. Owned by the layer. </p>

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<hr/>The documentation for this class was generated from the following file:<ul>
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