PricingTransactionPairProfitFunction.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 1998 Pascal Vincent
// Copyright (C) 1999-2002 Pascal Vincent, Yoshua Bengio, Rejean Ducharme and University of Montreal
// Copyright (C) 2001-2002 Nicolas Chapados, Ichiro Takeuchi, Jean-Sebastien Senecal
// Copyright (C) 2002 Xiangdong Wang, Christian Dorion

// 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.
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//     documentation and/or other materials provided with the distribution.
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/* *******************************************************      
   * $Id: PricingTransactionPairProfitFunction.h,v 1.4 2004/04/07 23:16:58 morinf Exp $
   * This file is part of the PLearn library.
   ******************************************************* */

#ifndef PricingTransactionPairProfitFunction_INC
#define PricingTransactionPairProfitFunction_INC

#include "Kernel.h"

namespace PLearn {
using namespace std;


class PricingTransactionPairProfitFunction : public Kernel
{
    typedef Kernel inherited;

protected:
    real multiplicative_cost; 
    real additive_cost; 
    real per_unit_cost; 
public:
    PricingTransactionPairProfitFunction(){}
    PricingTransactionPairProfitFunction(real the_multiplicative_cost, 
                                         real the_additive_cost=0,
                                         real the_per_unit_cost=0) :
      multiplicative_cost(the_multiplicative_cost), additive_cost(the_additive_cost),
      per_unit_cost(the_per_unit_cost) {}
    
    PLEARN_DECLARE_OBJECT(PricingTransactionPairProfitFunction);
    
    virtual string info() const
        { return "pricing_pair_profit"; }

    virtual real evaluate(const Vec& output, const Vec& target) const; 

protected:
    static void declareOptions(OptionList &ol);    
};

DECLARE_OBJECT_PTR(PricingTransactionPairProfitFunction);

} // end of namespace PLearn

#endif

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