Increase the stack size, or use a different serialiser (they're only a half dozen lines to write), or different data structure?
-- Don frigginfriggins: > I'm playing around with Netflix, implementing a simple KNN-algorithm, I will > later try SVD which seems to be the most successful approach. > > Using a database like Postgresqk is to slow so I want to serialize a > datastructure containing the ratings. I'm not sure about the > representation I will use just yet, if I should use multiple arrays or an Map/ > IntMap. > > However I tried Data.Binary and already for small sizes I get stack overflow > when deserializing. > The serializing works fine but when bringing it back it overflows. > How can I solve this? This is just 2MB, I will eventually need soemthing like > 2-500MB to store everything depending on what representatin I choose. > > module Serialize where > import qualified Data.Binary as B > import qualified Data.Binary.Put as P > import qualified Data.Map as M > import qualified Data.List as L > > genTest :: Int -> M.Map (Int,Int) Int > genTest n = let movies = take n $ repeat 1 > grades = take n $ repeat 4 in > M.fromList $ ([1..n] `zip` movies) `zip` grades > > main = do > let a = genTest 50000 > B.encodeFile "C:/users/saftarn/desktop/bintest.txt" a > print "Success" > > dec = B.decodeFile "C:/users/saftarn/desktop/bintest.txt" >>= \a -> > return $ (a :: M.Map (Int,Int) Int) > > > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe