Actuarial calculations

As of March 2020, School of Haskell has been switched to read-only mode.

Why use Haskell ?

Using Haskell is clearly unsual when associated to actuaries. Actuaries do not program that much, they rather use softwares like R or Matlab. My goal here is to use Haskell to model actuarial concepts

Simple computations

The simplest thing that can be computed is the premium, given an insured value. Here, we handle everything as Double.

basePremium :: Double -> Double -> Double
basePremium baserate exposure
    -- manage exceptions (negative base rate)
    | baserate < 0  
         = error "Negative rate"
    -- manage exceptions (negative insured value)
    | exposure < 0  
         = error "Negative exposure"
    -- nominal case
    | otherwise
        = baserate * exposure

main :: IO ()
main = do
    print (basePremium 0.0005 1000000)