<p>In <a href="https://github.com/mlpack/mlpack/pull/757#discussion_r75077182">src/mlpack/methods/ann/layer/inception_layer.hpp</a>:</p>
<pre style='color:#555'>&gt; +    // Forward pass for 3x3 pool path. 
&gt; +    pool3.InputParameter() = input;
&gt; +    pool3.Forward(input, pool3.OutputParameter());
&gt; +    Pad(pool3.OutputParameter(), 1, 1, convPool.InputParameter());
&gt; +    convPool.Forward(pool3.OutputParameter(), convPool.OutputParameter());
&gt; +    biasPool.Forward(convPool.OutputParameter(), biasPool.OutputParameter());
&gt; +    basePool.InputParameter() = biasPool.OutputParameter();
&gt; +    basePool.Forward(convPool.OutputParameter(), basePool.OutputParameter());
&gt; +
&gt; +    // concatenate outputs of all the paths.
&gt; +    output = arma::join_slices( 
&gt; +              arma::join_slices(
&gt; +                arma::join_slices( 
&gt; +                  base1.OutputParameter(), base3.OutputParameter() ), 
&gt; +                  base5.OutputParameter() ), basePool.OutputParameter());
&gt; +
</pre>
<p>we have to set the weights of all the layers that constitute the inception layer in the constructor? Also inception layer in itself does not do any operation, so we need not define the overall weight dimension.</p>

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