* Rodney Dawes <[email protected]> wrote: > We would just need to also do something for apps with no > ratings at all, so they will get weighted better than apps that > have all negative ratings.
It's pretty simple. Default to a score of 50% (3 stars?), and adjust that score up or down based on ratings. Adjust up/down farther when an app has lots of good ratings or lots of bad ratings, because more ratings allows for more certainty. I generally do this by normalizing into a range of -1.0 to +1.0, doing all the math in that space, then re-adjusting it to the scale used for display (1 star to 5 stars). This makes center-default scores easy to calculate. -- Selene -- Mailing list: https://launchpad.net/~ubuntu-phone Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-phone More help : https://help.launchpad.net/ListHelp
