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{-|
Module : Gargantext.Core.Statistics
Description :
Copyright : (c) CNRS, 2017-Present
License : AGPL + CECILL v3
Maintainer : team@gargantext.org
Stability : experimental
Portability : POSIX
-}
module Gargantext.Core.Statistics
where
import Data.Array.IArray (Array, listArray, elems)
import Data.List qualified as List
import Data.Map.Strict qualified as Map
import Data.Vector.Storable qualified as Vec
import Gargantext.Prelude
import Numeric.Statistics.PCA (pcaReduceN)
data Dimension = Dimension Int
pcaReduceTo :: Ord t
=> Dimension
-> Map t (Vec.Vector Double)
-> Map t (Vec.Vector Double)
pcaReduceTo (Dimension d) m = Map.fromList
$ zip txts
$ elems
$ pcaReduceN m'' d
where
m'' :: Array Int (Vec.Vector Double)
m'' = listArray (1, List.length m') m'
(txts,m') = List.unzip $ Map.toList m