/*
*  Similarity computations
*/

double maxlink(double a, double b) 
{
    return (a > b? a*99+b: b*99+a)/100;
}

double minlink(double a, double b) 
{
    return (a < b? a*999+b: b*999+a)/1000;
}

double avelink(double a, double b) 
{
    return (a+b)/2;
}