NeuralLeakyRectifiedLinearLayer.cpp

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/*
 * Copyright (c) 2014, Shogun Toolbox Foundation
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 * and/or other materials provided with the distribution.
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 * software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 * Written (W) 2015 Sanuj Sharma
 */

#include <shogun/neuralnets/NeuralLeakyRectifiedLinearLayer.h>
#include <shogun/mathematics/Math.h>
#include <shogun/lib/SGVector.h>

using namespace shogun;

CNeuralLeakyRectifiedLinearLayer::CNeuralLeakyRectifiedLinearLayer() : CNeuralRectifiedLinearLayer()
{
    m_alpha=0.01;
}

CNeuralLeakyRectifiedLinearLayer::CNeuralLeakyRectifiedLinearLayer(int32_t num_neurons):
CNeuralRectifiedLinearLayer(num_neurons)
{
    m_alpha=0.01;
}

void CNeuralLeakyRectifiedLinearLayer::compute_activations(
    SGVector<float64_t> parameters,
    CDynamicObjectArray* layers)
{
    CNeuralLinearLayer::compute_activations(parameters, layers);

    int32_t len = m_num_neurons*m_batch_size;
    for (int32_t i=0; i<len; i++)
    {
        m_activations[i] = CMath::max<float64_t>(m_alpha*m_activations[i], m_activations[i]);
    }
}