[amflare]

> Considering only positive and negative ratings (i.e. not a 5-star scale)

Is there anywhere that details the changes necessary to use for other rating scales (such as the 5-star/10-star system)?

[10000truths]

You could just convert the 5-star scale to weighted upvotes/downvotes, like so:

  1 stars = 0.00 upvote, 1.00 downvote
  2 stars = 0.25 upvote, 0.75 downvote
  3 stars = 0.50 upvote, 0.50 downvote
  4 stars = 0.75 upvote, 0.25 downvote
  5 stars = 1.00 upvote, 0.00 downvote

And then calculate as usual, and then re-map the result of the formula from the [0, 1] interval to the [1, 5] interval.

[jimmaswell]

> Considering only positive and negative ratings (i.e. not a 5-star scale)

I hate this. It feels like part of the internet getting dumbed down.

[Y_Y]

Yes, we should dumb up, not down!