flickrcombat.com

Lots of people have asked us on the rank formula, so here it is. We would really appreciate it if you helped us with ideas or told us your opinion on how you think the rank should be computed.

Criteria for a good formula :

1. more wins -> increase the rank

2. more defeats -> lower the rank

3. new photos -> neutral rank

4. the tops should not bounce; newcomers should not reach the top too easy.

In the picture below you can see the rank, resulted from the number of defeats and wins. On the horizontal axis, we have defeats / battlesMax and wins / battlesMax (where battlesMax is the maximum number of battles ever reached by a picture)

The way it works :

- a new photo enters the rank of 50%.

- with every defeat, it goes along the blue line (lower rank)

- with every win, it goes along the orange line (higher rank)

- it takes a while for the newcomers to reach the top (this is natural because it takes time to raise enough votes to enter the top)