deanie

An embedded probabilistic programming language.
git clone git://git.jtobin.io/deanie.git
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BetaBernoulliImportance.hs (386B)

      1 
      2 module Main where
      3 
      4 import Control.Monad
      5 import Deanie
      6 import Model.BetaBernoulli as Model
      7 
      8 posterior :: Double -> Double -> Program (Double, Double)
      9 posterior a b =
     10   importance Model.observations (beta a b) logDensityBernoulli
     11 
     12 main :: IO ()
     13 main = do
     14   samples <- replicateM 1000 (sample (rvar (posterior 1 1)))
     15   mapM_ print samples
     16 
     17   putStrLn "\nestimate:"
     18   print (mcw samples)
     19