summachine.h

强化学习算法（R-Learning）难得的珍贵资料

// Copyright (C) 2003 Samy Bengio ([e-mail])
//                
// This file is part of Torch 3.
//
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
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//    derived from this software without specific prior written permission.
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#ifndef SUM_MACHINE_INC
#define SUM_MACHINE_INC

#include "GradientMachine.h"

namespace Torch {

/** This machine simply adds up its input vectors. Formally speaking,
    $outputs[i] = \sum_j inputs_j[i]$ where $i$ spans the size of the
    vectors and $j$ spans the number of input vectors.

    @author Samy Bengio ([e-mail])
*/
class SumMachine : public GradientMachine
{
  public:

    /// The number of input vectors
    int n_machines;

    /// 
    SumMachine(int n_units, int n_machines_);

    virtual void frameForward(int t, real *f_inputs, real *f_outputs);
    virtual void frameBackward(int t, real *f_inputs, real *beta_, real *f_outputs, real *alpha_);

    virtual ~SumMachine();
};


}

#endif