source: branches/0.4-stable/yat/regression/Kernel.h @ 1392

#ifndef _theplu_yat_regression_kernel_
#define _theplu_yat_regression_kernel_

// $Id: Kernel.h 1392 2008-07-28 19:35:30Z peter $

/*
  Copyright (C) 2004 Peter Johansson
  Copyright (C) 2005 Jari Häkkinen, Peter Johansson
  Copyright (C) 2006 Jari Häkkinen
  Copyright (C) 2007 Jari Häkkinen, Peter Johansson

  This file is part of the yat library, http://dev.thep.lu.se/yat

  The yat library is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.

  The yat library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/

namespace theplu {
namespace yat {
namespace regression {

  ///
  /// @brief Interface Class for calculating the weights in a more
  /// general way than classical rectangular windows.
  ///
  class Kernel
  {
    
    public:
    ///
    /// Constructor
    ///
    inline Kernel(void) {};

    virtual ~Kernel(void) {};

    ///
    /// Operator calculating calculating kernel value.  
    ///
    virtual double operator()(const double) const=0;
  };

}}} // of namespaces regression, yat, and theplu

#endif