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  <div class="section" id="module-paddle.trainer_config_helpers.poolings">
<span id="poolings"></span><h1>Poolings<a class="headerlink" href="#module-paddle.trainer_config_helpers.poolings" title="Permalink to this headline"></a></h1>
<p>Pooling type that paddle supported. Note these pooling types are used for
sequence input, not for images.</p>
<p>Each PoolingType contains.</p>
<ul class="simple">
<li>name: pooling layer type name used by paddle.</li>
</ul>
<dl class="class">
<dt id="paddle.trainer_config_helpers.poolings.BasePoolingType">
<em class="property">class </em><code class="descclassname">paddle.trainer_config_helpers.poolings.</code><code class="descname">BasePoolingType</code><span class="sig-paren">(</span><em>name</em><span class="sig-paren">)</span><a class="headerlink" href="#paddle.trainer_config_helpers.poolings.BasePoolingType" title="Permalink to this definition"></a></dt>
<dd><p>Base Pooling Type.</p>
</dd></dl>

<dl class="class">
<dt id="paddle.trainer_config_helpers.poolings.MaxPooling">
<em class="property">class </em><code class="descclassname">paddle.trainer_config_helpers.poolings.</code><code class="descname">MaxPooling</code><a class="headerlink" href="#paddle.trainer_config_helpers.poolings.MaxPooling" title="Permalink to this definition"></a></dt>
<dd><p>Max pooling.</p>
<p>Return the very large values for each dimension in sequence or time steps.</p>
<div class="math">
\[max(samples\_of\_a\_sequence)\]</div>
</dd></dl>

<dl class="class">
<dt id="paddle.trainer_config_helpers.poolings.AvgPooling">
<em class="property">class </em><code class="descclassname">paddle.trainer_config_helpers.poolings.</code><code class="descname">AvgPooling</code><span class="sig-paren">(</span><em>strategy='average'</em><span class="sig-paren">)</span><a class="headerlink" href="#paddle.trainer_config_helpers.poolings.AvgPooling" title="Permalink to this definition"></a></dt>
<dd><p>Average pooling.</p>
<p>Return the average values for each dimension in sequence or time steps.</p>
<div class="math">
\[sum(samples\_of\_a\_sequence)/sample\_num\]</div>
</dd></dl>

<dl class="class">
<dt id="paddle.trainer_config_helpers.poolings.SumPooling">
<em class="property">class </em><code class="descclassname">paddle.trainer_config_helpers.poolings.</code><code class="descname">SumPooling</code><a class="headerlink" href="#paddle.trainer_config_helpers.poolings.SumPooling" title="Permalink to this definition"></a></dt>
<dd><p>Sum pooling.</p>
<p>Return the sum values of each dimension in sequence or time steps.</p>
<div class="math">
\[sum(samples\_of\_a\_sequence)\]</div>
</dd></dl>

<dl class="class">
<dt id="paddle.trainer_config_helpers.poolings.SquareRootNPooling">
<em class="property">class </em><code class="descclassname">paddle.trainer_config_helpers.poolings.</code><code class="descname">SquareRootNPooling</code><a class="headerlink" href="#paddle.trainer_config_helpers.poolings.SquareRootNPooling" title="Permalink to this definition"></a></dt>
<dd><p>Square Root Pooling.</p>
<p>Return the square root values of each dimension in sequence or time steps.</p>
<div class="math">
\[sum(samples\_of\_a\_sequence)/sqrt(sample\_num)\]</div>
</dd></dl>

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