question: @ Override public double calculateDistance ( double [ ] x1 , double [ ] x2 ) { double result = 0 ; int zeros = x1 . length ; for ( int i = 0 ; i < x1 . length ; i ++ ) { double factor = x1 [ i ] - x2 [ i ] ; result += Math . exp ( gamma * factor * factor ) ; if ( Tools . isNotEqual ( x1 [ i ] , 0.0d ) || Tools . isNotEqual ( x2 [ i ] , 0.0d ) ) { zeros -- ; } } result += zeros ; return Math . pow ( result , degree ) ; }
target:  Calculates kernel value of vectors x and y. 