public static double objectiveFunction(double[][] P, double[][] U, int[][] input, double factor) {
        double result = 0;
        double tempResult = 0;
        for ( int u = 0; u < U[0].length; u++ ) {
            for ( int p = 0; p < P[0].length; p++ ) {
                if ( input[u][p] != 0 ) {
                    double temp = multiplyMatricesOneDim(getColumn(U, u), getColumn(P, p));
                    double temp2 = input[u][p];
                    result += Math.pow(temp2 - temp, 2);
                }
            }
        }

        for ( int u = 0; u < U[0].length; u++ ) {
            tempResult += Math.pow(getNorm(getColumn(U, u)), 2);
        }

        for ( int p = 0; p < P[0].length; p++ ) {
            tempResult += Math.pow(getNorm(getColumn(P, p)), 2);
        }
        return result + tempResult * factor;
    }