Instead of rating items with grades from 1 to 10, I would like to have 1 vs 1 "fights". Two items are displayed beside each other and you pick the one which you like more. Based on these "fight" results, an algorithm should calculate ratings for each item.
You can see this approach on Flickchart.com where movies are rated using this approach.
It looks like this:
As you can see, items are pushed upwards if they win a "fight". The ranking is always changing based on the "fight" results. But this can't be only based on the win quote (here 54%) since it's harder to win against "Titanic" than against "25th Hour" or so.
There are a few things which are quite unclear for me: - How are the ratings calculated? How do you decide which film is on the first place in the ranking? You have to consider how often an items wins and how good are the beaten items. - How to choose which items have a "fight"?
Of course, you can't tell me how Flickchart exactly does this all. But maybe you can tell me how it could be done. Thanks in advance!