Safe Haskell | None |
---|---|
Language | Haskell2010 |
A list of items with relative frequencies of appearance.
- data Frequency a
- uniformFreq :: Text -> [a] -> Frequency a
- toFreq :: Text -> [(Int, a)] -> Frequency a
- scaleFreq :: Show a => Int -> Frequency a -> Frequency a
- renameFreq :: Text -> Frequency a -> Frequency a
- setFreq :: Eq a => Frequency a -> a -> Int -> Frequency a
- nullFreq :: Frequency a -> Bool
- runFrequency :: Frequency a -> [(Int, a)]
- nameFrequency :: Frequency a -> Text
- maxFreq :: Ord a => Frequency a -> Maybe a
- minFreq :: Ord a => Frequency a -> Maybe a
- meanFreq :: Frequency Int -> Int
The Frequency
type
The frequency distribution type. Not normalized (operations may or may not group the same elements and sum their frequencies). However, elements with zero frequency are removed upon construction.
The Eq
instance compares raw representations, not relative,
normalized frequencies, so operations don't need to preserve
the expected equalities, unless they do some kind of normalization
(see Dice
).
Alternative Frequency | |
Monad Frequency | |
Functor Frequency | |
Num SimpleDice | |
MonadPlus Frequency | |
Applicative Frequency | |
Foldable Frequency | |
Traversable Frequency | |
Eq a => Eq (Frequency a) | |
Ord a => Ord (Frequency a) | |
Read a => Read (Frequency a) | |
Show a => Show (Frequency a) | |
Generic (Frequency a) | |
Binary a => Binary (Frequency a) | |
NFData a => NFData (Frequency a) | |
Hashable a => Hashable (Frequency a) | |
type Rep (Frequency a) |
Construction
uniformFreq :: Text -> [a] -> Frequency a Source
Uniform discrete frequency distribution.
toFreq :: Text -> [(Int, a)] -> Frequency a Source
Takes a name and a list of frequencies and items into the frequency distribution.
Transformation
scaleFreq :: Show a => Int -> Frequency a -> Frequency a Source
Scale frequency distribution, multiplying it by a positive integer constant.
renameFreq :: Text -> Frequency a -> Frequency a Source
Change the description of the frequency.
Consumption
runFrequency :: Frequency a -> [(Int, a)] Source
give acces to raw frequency values
nameFrequency :: Frequency a -> Text Source
short description for debug, etc.; keep it lazy, because it's rarely used