Numeric.Probability.Random

Randomized values

random generator

newtype T a

Random values

Constructors

Cons

Fields

decons :: State StdGen a

Instances

Monad T

Functor T

Applicative T

C T

C Double T

randomR :: Random a => (a, a) -> T a

run :: T a -> IO a

Run random action in IO monad.

runSeed :: StdGen -> T a -> a

Run random action without IO using a seed.

print :: Show a => T a -> IO ()

pick :: (Num prob, Ord prob, Random prob) => T prob a -> T a

random distribution

type Distribution prob a = T (T prob a)

Randomized distribution

above :: (Num prob, Ord prob, Ord a) => prob -> Distribution prob a -> Distribution prob (Select a)

dist :: (Fractional prob, Ord a) => [T a] -> Distribution prob a

dist converts a list of randomly generated values into a distribution by taking equal weights for all values. Thus dist (replicate n rnd) simulates rnd n times and returns an estimation of the distribution represented by rnd.

Randomized changes

type Change a = a -> T a

random change

change :: (Num prob, Ord prob, Random prob) => T prob a -> Change a

Randomized transitions

type Transition prob a = a -> Distribution prob a

random transition

type ApproxDist a = T [a]