NICE_VisLearning/math/kernels/KernelStd.cpp

/** 
* @file KernelStd.cpp
* @brief Standard kernel
* @author Erik Rodner
* @date 10/24/2007

*/
#ifdef NOVISUAL
#include <vislearning/nice_nonvis.h>
#else
#include <vislearning/nice.h>
#endif

#include <iostream>

#include "KernelStd.h"

using namespace OBJREC;

using namespace std;
using namespace NICE;



KernelStd::KernelStd() : Kernel(true)
{
}

KernelStd::~KernelStd()
{
}

double KernelStd::K (const NICE::Vector & x, const NICE::Vector & y) const
{
	if ( x.size() != y.size() ) 
		fthrow (Exception, "KernelStd::K: vectors must have the same dimension\n");
    double sum = 0.0;
    for ( int i = 0 ; i < (int)x.size() ; i++ )
		sum += x[i] * y[i];

    return sum;
}