# Is this a valid use case for Euclidean distance?

I have a set of points which is a count of links that users have clicked on :

         link1,link2,link3,link4
user1,   0    ,2    ,3    ,2
user2,   1    ,4    ,0    ,5


I am not sure which distance function I should use to calculate the distance between users. I think Euclidean distance is a good fit (reading http://en.wikipedia.org/wiki/Euclidean_distance) ?

• What would be the reason for the distance calculation? That ought to play an important role in evaluating whether your choice of distance is useful or appropriate.
– whuber
May 13, 2014 at 22:51