/*
    Copyright (C) 2012 Bartosz Broda, Jacek Bochenek, Łukasz Biłeńkij, 
    Damian Jaworski, Wojciech Mazur, Dominik Piasecki, Maciej Piasecki, 
    Radosław Ramocki
    
    This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your option)
any later version.

    This program 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 LICENSE and COPYING files for more details.
*/

#pragma once

#include "../comparator_stdheaders.h"

#include "WeightFeature.h"


namespace smartcomparator
{

	namespace weights
	{


class SMART_COMPARATOR_API IdfWeight : public WeightFeature
{
public:
	IdfWeight(Matrices::SuperMatrixPtr pMatrix);

	virtual ~IdfWeight(void);


	virtual void Weight(size_t rowindex, Matrices::CompressedVector *v, std::set<size_t> &filteredIndices);

private:
	double mDocumentCount;
};


	}
}
