Hans/haga
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix floating point precision problems in GA.worst

Browse Source 
By using negate instead of (1 /).
This commit is contained in:
David Pätzel 2019-10-22 07:08:37 +02:00
parent 939502e511
commit 3c45c206fc
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/GA.hs
View File

@ -158,8 +158,7 @@ bestsBy k f =
The @k@ worst individuals in the population. The @k@ worst individuals in the population.
-} -}
worst :: (Individual i, Monad m) => N -> Population i -> m [i] worst :: (Individual i, Monad m) => N -> Population i -> m [i]
-- TODO (1 /) might not be stable regarding floating point precision worst = flip bestsBy (fmap negate . fitness)
worst = flip bestsBy (fmap (1 /) . fitness)
{-| {-|
The @k@ best individuals in the population. The @k@ best individuals in the population.