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chore: nudges for ExamRoomRandom have a bigger effect

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Wolfgang Witt 2021-03-24 12:28:19 +01:00 committed by Gregor Kleen
parent f9b545952d
commit e00a2b074b
1 changed files with 22 additions and 5 deletions
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27
src/Handler/Utils/Exam.hs
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@ -317,9 +317,12 @@ examAutoOccurrence (hash -> seed) rule ExamAutoOccurrenceConfig{..} occurrences
predToPositive 1 = Nothing
predToPositive x = Just $ pred x
extraCapacity :: Natural
extraCapacity
| restrictedSpace > numUnassignedUsers = restrictedSpace - numUnassignedUsers
| otherwise = 0
extraUsers :: Natural
(extraCapacity, extraUsers)
| restrictedSpace > numUnassignedUsers
= (restrictedSpace - numUnassignedUsers, 0)
| otherwise
= (0, numUnassignedUsers - restrictedSpace)
where
restrictedSpace :: Natural
restrictedSpace = sum restrictedOccurrences
@ -337,18 +340,32 @@ examAutoOccurrence (hash -> seed) rule ExamAutoOccurrenceConfig{..} occurrences
nudgedUnrestrictedOccurrences = nudgedPositiveOccurrences unrestrictedPositiveNudges []
++ nudgedNegativeOccurrences unrestrictedNegativeNudges []
where
replicateMany :: Int -> [a] -> [a]
replicateMany n as = take (n * length as) $ List.cycle as
nudgeEffect :: Int
nudgeEffect = max 1 $ ceiling $ eaocNudgeSize * fromIntegral extraUsers
-- for a positive nudge, add one entry to the front of the list
nudgedPositiveOccurrences :: Map ExamOccurrenceId Natural -> [ExamOccurrenceId] -> [ExamOccurrenceId]
nudgedPositiveOccurrences nudges acc
| null nudges = acc
| otherwise = nudgedPositiveOccurrences (Map.mapMaybe predToPositive nudges)
$ Set.toList (Set.intersection unrestrictedOccurrences $ Map.keysSet nudges) ++ acc
$ nudgeOccurrences' ++ acc
where
nudgeOccurrences :: [ExamOccurrenceId]
nudgeOccurrences = Set.toList (Set.intersection unrestrictedOccurrences $ Map.keysSet nudges)
nudgeOccurrences' :: [ExamOccurrenceId]
nudgeOccurrences' = replicateMany nudgeEffect nudgeOccurrences
-- for a negative nudge, add one entry for every other unrestricted occurrence to the front of the list
nudgedNegativeOccurrences :: Map ExamOccurrenceId Natural ->[ExamOccurrenceId] -> [ExamOccurrenceId]
nudgedNegativeOccurrences nudges acc
| null nudges = acc
| otherwise = nudgedNegativeOccurrences (Map.mapMaybe predToPositive nudges)
$ Set.toList (Set.difference unrestrictedOccurrences $ Map.keysSet nudges) ++ acc
$ nudgeOccurrences' ++ acc
where
nudgeOccurrences :: [ExamOccurrenceId]
nudgeOccurrences = Set.toList (Set.difference unrestrictedOccurrences $ Map.keysSet nudges)
nudgeOccurrences' :: [ExamOccurrenceId]
nudgeOccurrences' = replicateMany nudgeEffect nudgeOccurrences
-- fill in users in a random order
randomlyAssignedUsers :: Map UserId (Maybe ExamOccurrenceId)
randomlyAssignedUsers = Map.fromList $ fillUnrestricted