public double[] produceMAE(double[][] m,int[][]test){ 
	    double mae= 0.0;
	    double []mm=new double[TESTROWCOUNT ];
	    for(int i=0;i<TESTROWCOUNT ;i++ )  {
			 double sum_fencha= 0.0;   
			 int num=0;
		  for(int j=0;j<PREFROWCOUNT;j++){ 
		   if(test[i][j]!=0&& m[i][j]!=0){
			   sum_fencha+=Math.abs(m[i][j]-(double)test[i][j]);
			   num++;
			  }
		  }if (num==0) mae=0;else mae= sum_fencha/num;
		   mm[i]=mae;	
		 }
		return mm;
	  }