working on temporal matching

src/Gargantext/Viz/AdaptativePhylo.hs

@@ -61,6 +61,7 @@ data Config =
             , phyloName    :: Text
             , phyloLevel   :: Int
             , timeUnit     :: Int
+            , timeMatching :: Int
             , timePeriod   :: Int
             , timeStep     :: Int
             , fisSupport   :: Int
@@ -78,6 +79,7 @@ defaultConfig =
             , phyloName    = pack "Default Phylo"
             , phyloLevel   = 2
             , timeUnit     = 1
+            , timeMatching = 5
             , timePeriod   = 3
             , timeStep     = 1
             , fisSupport   = 2
@@ -236,6 +238,9 @@ type Weight = Double
 -- | Pointer : A weighted pointer to a given PhyloGroup
 type Pointer = (PhyloGroupId, Weight)
 
+data Filiation = ToParents | ToChilds deriving (Generic, Show)    
+data PointerType = TemporalPointer | LevelPointer deriving (Generic, Show)                
+
 
 ---------------------------
 -- | Frequent Item Set | --

src/Gargantext/Viz/Phylo/PhyloTools.hs

@@ -18,17 +18,19 @@ module Gargantext.Viz.Phylo.PhyloTools where
 
 import Data.Vector (Vector, elemIndex)
 import Data.List (sort, concat, null, union, (++), tails, sortOn)
-import Data.Set (size)
-import Data.Map (Map, elems, fromList, unionWith, keys)
+import Data.Set (Set, size)
+import Data.Map (Map, elems, fromList, unionWith, keys, member, (!))
 import Data.String (String)
 
 import Gargantext.Prelude
 import Gargantext.Viz.AdaptativePhylo
 
 import Debug.Trace (trace)
-import Control.Lens
+import Control.Lens hiding (Level)
 
 import qualified Data.Vector as Vector
+import qualified Data.List as List
+import qualified Data.Set as Set
 
 --------------
 -- | Misc | --
@@ -39,6 +41,12 @@ countSup :: Double -> [Double] -> Int
 countSup s l = length $ filter (>s) l
 
 
+elemIndex' :: Eq a => a -> [a] -> Int
+elemIndex' e l = case (List.elemIndex e l) of
+    Nothing -> panic ("[ERR][Viz.Phylo.PhyloTools] element not in list")
+    Just i  -> i
+
+
 ---------------------
 -- | Foundations | --
 ---------------------
@@ -57,6 +65,11 @@ ngramsToIdx ns fdt = map (\n -> fromJust $ elemIndex n fdt) ns
 -- | Time | --
 --------------
 
+-- | To transform a list of periods into a set of Dates
+periodsToYears :: [(Date,Date)] -> Set Date
+periodsToYears periods = (Set.fromList . sort . concat)
+                       $ map (\(d,d') -> [d..d']) periods
+
 
 findBounds :: [Date] -> (Date,Date)
 findBounds dates = 
@@ -134,7 +147,7 @@ listToCombi' l = [(x,y) | (x:rest) <- tails l,  y <- rest]
 listToEqual' :: Eq a => [a] -> [(a,a)]
 listToEqual' l = [(x,y) | x <- l, y <- l, x == y]
 
-listToKeys :: [Int] -> [(Int,Int)]
+listToKeys :: Eq a =>  [a] -> [(a,a)]
 listToKeys lst = (listToCombi' lst) ++ (listToEqual' lst)
 
 listToMatrix :: [Int] -> Map (Int,Int) Double
@@ -143,11 +156,28 @@ listToMatrix lst = fromList $ map (\k -> (k,1)) $ listToKeys $ sort lst
 sumCooc :: Cooc -> Cooc -> Cooc
 sumCooc cooc cooc' = unionWith (+) cooc cooc'
 
+---------------
+-- | Phylo | --
+---------------
+
+getGroupId :: PhyloGroup -> PhyloGroupId 
+getGroupId group = ((group ^. phylo_groupPeriod, group ^. phylo_groupLevel), group ^. phylo_groupIndex)
 
 ---------------
 -- | Phylo | --
 ---------------
 
+addPointers :: PhyloGroup -> Filiation -> PointerType -> [Pointer] -> PhyloGroup
+addPointers group fil pty pointers = 
+    case pty of 
+        TemporalPointer -> case fil of 
+                                ToChilds  -> group & phylo_groupPeriodChilds  %~ (++ pointers)
+                                ToParents -> group & phylo_groupPeriodParents %~ (++ pointers)
+        LevelPointer    -> case fil of 
+                                ToChilds  -> group & phylo_groupLevelChilds %~ (++ pointers)
+                                ToParents -> group & phylo_groupLevelParents %~ (++ pointers)
+
+
 getPeriodIds :: Phylo -> [(Date,Date)]
 getPeriodIds phylo = sortOn fst
                    $ keys
@@ -160,3 +190,30 @@ getConfig phylo = (phylo ^. phylo_param) ^. phyloParam_config
 
 getRoots :: Phylo -> Vector Ngrams
 getRoots phylo = (phylo ^. phylo_foundations) ^. foundations_roots
+
+
+getGroupsFromLevel :: Level -> Phylo -> [PhyloGroup]
+getGroupsFromLevel lvl phylo = 
+    elems $ view ( phylo_periods
+                 .  traverse
+                 . phylo_periodLevels
+                 .  traverse
+                 .  filtered (\phyloLvl -> phyloLvl ^. phylo_levelLevel == lvl)
+                 . phylo_levelGroups ) phylo
+
+
+updatePhyloGroups :: Level -> Map PhyloGroupId PhyloGroup -> Phylo -> Phylo
+updatePhyloGroups lvl m phylo = 
+    over ( phylo_periods
+         .  traverse
+         . phylo_periodLevels
+         .  traverse
+         .  filtered (\phyloLvl -> phyloLvl ^. phylo_levelLevel == lvl)
+         . phylo_levelGroups
+         .  traverse 
+         ) (\group -> 
+                let id = getGroupId group
+                in 
+                    if member id m 
+                    then m ! id
+                    else group ) phylo
\ No newline at end of file

src/Gargantext/Viz/Phylo/SynchronicClustering.hs

@@ -14,3 +14,16 @@ Portability : POSIX
 {-# LANGUAGE MultiParamTypeClasses #-}
 
 module Gargantext.Viz.Phylo.SynchronicClustering where
+
+import Gargantext.Prelude
+import Gargantext.Viz.AdaptativePhylo
+import Gargantext.Viz.Phylo.PhyloTools
+
+
+--------------------
+-- | Clustering | --
+--------------------
+
+
+relatedComponents :: [PhyloGroup] -> [[PhyloGroup]]
+relatedComponents groups = undefined 
\ No newline at end of file

src/Gargantext/Viz/Phylo/TemporalMatching.hs

@@ -14,3 +14,178 @@ Portability : POSIX
 {-# LANGUAGE MultiParamTypeClasses #-}
 
 module Gargantext.Viz.Phylo.TemporalMatching where
+
+import Data.List (concat, splitAt, tail, sortOn, (++), intersect, null, inits, find, groupBy, scanl, any, nub)
+import Data.Map  (Map, fromList, toList, fromListWith, filterWithKey, elems, restrictKeys)
+
+import Gargantext.Prelude
+import Gargantext.Viz.AdaptativePhylo
+import Gargantext.Viz.Phylo.PhyloTools
+import Gargantext.Viz.Phylo.SynchronicClustering
+
+import Control.Lens hiding (Level)
+
+
+-------------------
+-- | Proximity | --
+-------------------
+
+-- periodsToNbDocs :: [PhyloPeriodId] -> Phylo -> Double
+-- periodsToNbDocs prds phylo = sum $ elems 
+--                            $ restrictKeys (phylo ^. phylo_docsByYears)
+--                            $ periodsToYears prds 
+
+-- matchWithPairs :: PhyloGroup -> (PhyloGroup,PhyloGroup) -> Phylo -> Double
+-- matchWithPairs g1 (g2,g3) p = 
+--   let nbDocs = periodsToNbDocs [(getGroupPeriod g1),(getGroupPeriod g2),(getGroupPeriod g3)] p
+--       cooc   = if (g2 == g3)
+--                 then getGroupCooc g2
+--                 else unionWith (+) (getGroupCooc g2) (getGroupCooc g3)
+--       ngrams = if (g2 == g3)
+--                 then getGroupNgrams g2
+--                 else union (getGroupNgrams g2) (getGroupNgrams g3)
+--   in processProximity (getPhyloProximity p) nbDocs (getGroupCooc g1) cooc (getGroupNgrams g1) ngrams 
+
+
+toProximity :: Map Date Double -> PhyloGroup -> PhyloGroup -> PhyloGroup -> Double
+toProximity docs group target target' = 
+    let nbDocs = sum $ elems docs
+    in undefined  
+
+------------------------
+-- | Local Matching | --
+------------------------
+
+
+makePairs :: [PhyloGroup] -> [PhyloPeriodId] -> Double -> Map Date Double -> PhyloGroup -> [(PhyloGroup,PhyloGroup)]
+makePairs candidates periods thr docs group = case null periods of
+    True  -> []
+          -- | at least on of the pair candidates should be from the last added period
+    False -> filter (\(cdt,cdt') -> (inLastPeriod cdt periods)
+                                 || (inLastPeriod cdt' periods))
+           $ listToKeys
+           -- | remove poor candidates from previous periods
+           $ filter (\cdt -> (inLastPeriod cdt periods)
+                          || ((toProximity (reframeDocs docs periods) group group cdt) >= thr)) candidates
+    where 
+        inLastPeriod :: PhyloGroup -> [PhyloPeriodId] -> Bool
+        inLastPeriod g prds = (g ^. phylo_groupPeriod) == (last' "makePairs" prds)
+
+
+phyloGroupMatching :: [[PhyloGroup]] -> Filiation -> Double -> Map Date Double -> PhyloGroup -> PhyloGroup
+phyloGroupMatching candidates fil thr docs group = case pointers of
+    Nothing  -> addPointers group fil TemporalPointer []
+    Just pts -> addPointers group fil TemporalPointer
+              $ head' "phyloGroupMatching"
+              -- | Keep only the best set of pointers grouped by proximity
+              $ groupBy (\pt pt' -> snd pt == snd pt')
+              $ reverse $ sortOn snd pts
+              -- | Find the first time frame where at leats one pointer satisfies the proximity threshold
+    where 
+        pointers :: Maybe [Pointer]
+        pointers = find (not . null)
+                 -- | for each time frame, process the proximity on relevant pairs of targeted groups
+                 $ scanl (\acc groups ->
+                            let periods = nub $ map (\g' -> g' ^. phylo_groupPeriod) $ concat groups
+                                pairs = makePairs (concat groups) periods thr docs group
+                            in  acc ++ ( filter (\(_,proximity) -> proximity >= thr )
+                                       $ concat
+                                       $ map (\(c,c') ->
+                                                -- | process the proximity between the current group and a pair of candidates 
+                                                let proximity = toProximity (reframeDocs docs periods) group c c'
+                                                in if (c == c')
+                                                   then [(getGroupId c,proximity)]
+                                                   else [(getGroupId c,proximity),(getGroupId c',proximity)] ) pairs)
+                         ) []
+                 -- | groups from [[1900],[1900,1901],[1900,1901,1902],...]
+                 $ inits candidates
+
+
+
+
+matchGroupToGroups :: [[PhyloGroup]] -> PhyloGroup -> PhyloGroup
+matchGroupToGroups candidates group = undefined
+
+
+-----------------------------
+-- | Adaptative Matching | --
+-----------------------------
+
+
+getNextPeriods :: Filiation -> Int -> PhyloPeriodId -> [PhyloPeriodId] -> [PhyloPeriodId]
+getNextPeriods fil max pId pIds = 
+    case fil of 
+        ToChilds  -> take max $ (tail . snd) $ splitAt (elemIndex' pId pIds) pIds
+        ToParents -> take max $ (reverse . fst) $ splitAt (elemIndex' pId pIds) pIds
+
+
+getCandidates :: Filiation -> PhyloGroup -> [PhyloPeriodId] -> [PhyloGroup] -> [[PhyloGroup]]
+getCandidates fil g pIds targets = 
+    case fil of
+        ToChilds  -> targets'
+        ToParents -> reverse targets'
+    where
+        targets' :: [[PhyloGroup]]
+        targets' = map (\groups' -> filter (\g' -> (not . null) $ intersect (g ^. phylo_groupNgrams) (g' ^. phylo_groupNgrams)) groups') $ elems
+                 $ filterWithKey (\k _ -> elem k pIds) 
+                 $ fromListWith (++)
+                 $ sortOn (fst . fst)
+                 $ map (\g' -> (g' ^. phylo_groupPeriod,[g'])) targets
+
+
+shouldBreak :: Double -> [(Double,[PhyloGroup])] -> Bool
+shouldBreak thr branches = any (\(quality,_) -> quality < thr) branches
+
+
+toBranchQuality :: [[PhyloGroup]] -> [(Double,[PhyloGroup])]
+toBranchQuality branches = undefined
+
+
+reframeDocs :: Map Date Double -> [PhyloPeriodId] -> Map Date Double
+reframeDocs docs periods = restrictKeys docs $ periodsToYears periods
+
+
+adaptativeMatching :: Int -> Double -> Double -> Double -> Map Date Double -> [PhyloGroup] -> [PhyloGroup] -> [PhyloPeriodId] -> [PhyloGroup]
+adaptativeMatching maxTime thrStep thrMatch thrQua docs groups candidates periods =
+    -- | check if we should break some of the new branches or not
+    case shouldBreak thrQua branches' of
+        True  -> concat $ map (\(s,b) -> 
+                                    if s >= thrQua
+                                    -- | we keep the branch as it is
+                                    then b
+                                    -- | we break the branch using an increased temporal matching threshold
+                                    else let nextGroups = undefined
+                                             nextCandidates = undefined
+                                             nextPeriods = undefined
+                                         in  adaptativeMatching maxTime thrStep (thrMatch + thrStep) thrQua 
+                                                                (reframeDocs docs nextPeriods)
+                                                                nextGroups nextCandidates nextPeriods
+                              ) branches'
+        -- | the quality of all the new branches is sufficient
+        False -> concat branches
+    where
+        -- | 3) process a quality score for each new branch
+        branches' :: [(Double,[PhyloGroup])]
+        branches' = toBranchQuality branches
+        -- | 2) group the new groups into branches 
+        branches :: [[PhyloGroup]]
+        branches = relatedComponents groups'
+        -- | 1) connect each group to its parents and childs
+        groups' :: [PhyloGroup]
+        groups' = map (\group ->
+                            let childs  = getCandidates ToChilds group
+                                                        (getNextPeriods ToChilds maxTime (group ^. phylo_groupPeriod) periods) candidates
+                                parents = getCandidates ToParents group
+                                                        (getNextPeriods ToParents maxTime (group ^. phylo_groupPeriod) periods) candidates
+                            -- | match the group to its possible childs then parents
+                            in  matchGroupToGroups parents $ matchGroupToGroups childs group
+                      ) groups
+
+
+temporalMatching :: Phylo -> Phylo
+temporalMatching phylo = 
+    let branches = fromList $ map (\g -> (getGroupId g, g))
+                 $ adaptativeMatching (timeMatching $ getConfig phylo) 0 0 0 
+                                      (phylo ^. phylo_timeDocs) 
+                                      (getGroupsFromLevel 1 phylo) (getGroupsFromLevel 1 phylo) (getPeriodIds phylo)
+    in  updatePhyloGroups 1 branches phylo
\ No newline at end of file