public static double getPairwiseScore(double[] mapSource, double[] mapDest)
	{
		double mapScore=0.0;
		int k=0;
		for(k=0;k<mapSource.length;k++)
		{
			if((mapSource[k]!=0.0 && mapDest[k]!=0.0)||(mapSource[k]==0.0 && mapDest[k]==0.0))
				mapScore++;
		}
		mapScore=mapScore/mapSource.length;
		return mapScore;
	}