Math.IRT.Fisher

Documentation

data FisherInfo

Constructors

FisherInfo

Fields

• items :: [Double]
• test :: !Double
• sem :: !Double

Instances

Show FisherInfo

Methods

showsPrec :: Int -> FisherInfo -> ShowS

show :: FisherInfo -> String

showList :: [FisherInfo] -> ShowS

fisherInfoObserved :: (ContDistr d, DensityDeriv d) => Double -> [Bool] -> [d] -> FisherInfo

The observed Fisher Information Applies a min/max prior to ensure a real-valued SEM

fisherInfoExpected :: ContDistr d => Double -> [d] -> FisherInfo

The expected Fisher Information

l' :: ContDistr d => Bool -> d -> Double -> Double

The first derivative of l, whatever l is... Once again, the catIrt documentation disappoints. According to catIrt, "u is the response, and x are the parameters." We only implement the MLE route

l'' :: (ContDistr d, DensityDeriv d) => Bool -> d -> Double -> Double

The second derivative of l (same one as in l')