Merge pull request #5278 from ddugovic/established-rd

Reduce established (leaderboard) RD threshold

modules/rating/src/main/Glicko.scala

@@ -20,9 +20,9 @@ case class Glicko(
   def intervalMax = (rating + deviation * 2).toInt
   def interval = intervalMin -> intervalMax
 
+  def rankable = deviation <= Glicko.rankableDeviation
   def provisional = deviation >= Glicko.provisionalDeviation
   def established = !provisional
-
   def establishedIntRating = established option intRating
 
   def refund(points: Int) = copy(rating = rating + points)
@@ -61,6 +61,7 @@ case object Glicko {
   val defaultIntRating = default.rating.toInt
 
   val minDeviation = 60
+  val rankableDeviation = 80
   val provisionalDeviation = 110
   val maxDeviation = 350
 

modules/rating/src/main/Perf.scala

@@ -65,6 +65,7 @@ case class Perf(
   def isEmpty = nb == 0
   def nonEmpty = !isEmpty
 
+  def rankable = glicko.rankable
   def provisional = glicko.provisional
   def established = glicko.established
 }

modules/user/src/main/RankingApi.scala

@@ -29,7 +29,7 @@ final class RankingApi(
       "perf" -> perfType.id,
       "rating" -> perf.intRating,
       "prog" -> perf.progress,
-      "stable" -> perf.established,
+      "stable" -> perf.rankable,
       "expiresAt" -> DateTime.now.plusDays(7)
     ),
       upsert = true).void