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Attribute constraints matrix is updated by comparing min/max value of old matrix with attribute values of new node

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tpajenka 2013-12-20 13:08:38 +01:00
parent 07d2d37bb6
commit e7c73a33df
1 changed files with 6 additions and 30 deletions
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36
src/DCB/DCB.hs
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@ -170,25 +170,13 @@ constraint :: Attr -> MaxDivergence -> Int -- ^ required number of consistent at
-> Maybe Constraints
constraint attr div req (ind, (fulfill, constr), _) newNode =
let
--TODO: UGLY hack... this has to be somewhere .. -.-
! posInf = read "Infinity" :: Double
! negInf = read "-Infinity" :: Double
-- convert into Vector of new Indices after appending new node-index
! totalInd = A.toUnboxed $ A.computeUnboxedS $ ind ++ A.fromListUnboxed (ix1 1) [newNode]
-- attribute matrix row of node to add
! attrSlice = A.slice attr (A.Any :. newNode :. A.All)
updateConstr :: (DIM2 -> Double) -> DIM2 -> Double
updateConstr f sh@(Z:.i:.c) =
let
! slice = A.slice attr (A.Any :. i)
-- TODO: why not compare current bounds with attribute values of new node?
! mins = A.traverse slice id (\g sh'@(Z :. j)-> if V.any (==j) totalInd then (g sh') else posInf)
! maxs = A.traverse slice id (\g sh'@(Z :. j)-> if V.any (==j) totalInd then (g sh') else negInf)
in
-- trace (show i P.++ show (A.toList slice) P.++ show c P.++ "\n " P.++ show (A.foldAllS (max) negInf $ maxs)) $
updateConstr f sh@(Z:.i:.c) =
case c of
0 -> A.foldAllS (min) posInf mins
1 -> A.foldAllS (max) negInf maxs
_ -> error "attr wrong"
0 -> min (f sh) (attrSlice!(A.ix1 i))
1 -> max (f sh) (attrSlice!(A.ix1 i))
! constrNew = A.computeUnboxedS $ A.traverse constr id updateConstr
--fulfill is borked..
@ -198,7 +186,7 @@ constraint attr div req (ind, (fulfill, constr), _) newNode =
in if nrHit >= req then Just {-$ trace ("returning const-matrix for "P.++ show (A.toList ind) P.++"\n" P.++ (B.unpack $ outputArray constrNew))-}
(A.computeUnboxedS fulfillNew, constrNew) else Nothing
-- updates the density of a graph extended by a single node
-- | Updates the density of a graph extended by a single node
updateDensity :: Adj -- ^ global adjacency matrix of all nodes
-> Vector A.U Int -- ^ nodes of the base graph
-> Int -- ^ node to extend the graph by
@ -206,19 +194,7 @@ updateDensity :: Adj -- ^ global adjacency matrix of all nodes
-> Density -- ^ new density of expanded graph
updateDensity adj nodes newNode dens =
let
neighbourSlice = A.map (\n -> fromIntegral $adj!(A.ix2 newNode n)) nodes
{-- awefull asymptotic efficiency
A.traverse
(A.slice (A.map fromIntegral adj) (A.Any :. newNode)) -- Array
id -- same Size
(\f sh@(_ :. i) ->
if V.any (==i) (A.toUnboxed nodes) then --if connected to graph
(f sh) --return connection
else
0) --never connect to nodes not extisting
--}
neighbours = A.foldAllS (+) (0::Int) ({- trace (show $ A.computeUnboxedS neighbourSlice)-} neighbourSlice)
{- A.traverse adj (reduceDim) (\f (Z :. i) ->