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authoremkael <emkael@tlen.pl>2015-02-17 16:03:02 +0100
committeremkael <emkael@tlen.pl>2015-02-17 16:03:02 +0100
commit304ec62f30c5d804a3dd18ceb0804a4b825b5d7b (patch)
tree0328fcf91effd8935a34a45e8f4e54ed1e0bf6ac /doc
parent7ef047bf021772fc9cbea0834c198a94d3700fb0 (diff)
Update challenges.md
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@@ -119,6 +119,7 @@ As I've already mentioned in the write-up of pairing and ranking method (see: do
The cut-off had to be more subtle than linear decrease of disparity, so the following formula was used:
`disparity` = `base_disparity` * 0.5 * (2.5 + `base_rating_change` / (`rating_change` - 2 * `base_rating_change`))) [if `rating_change` <= `base_rating_change`]
+
`disparity` = 0.75 * `base_disparity` [if `rating_change` >= `base_rating_change`], where:
* `base_disparity` and `base_rating_change` are application parameters