To develop the Learning of Ngrams Lists, I used the history of changes of ngrams list but it seems it has been changed, since my function got empty results:

runCmdReplEasy $ getHistory History_User NgramsTerms [73920]

src/Gargantext/Core/Text/List/Social/History.hs

history' :: [NgramsType] -> [ListId] -> NodeStory s NgramsStatePatch' -> Map ListId (Map NgramsType [HashMap NgramsTerm NgramsPatch]) history' types lists = (Map.map (Map.unionsWith (<>))) . (Map.map (map (Map.filterWithKey (\k _ -> List.elem k types)))) . (Map.map (map toMap)) . (Map.map (view a_history)) . (Map.filterWithKey (\k _ -> List.elem k lists)) . (view unNodeStory)

view a_history result is empty always now where is such history now ?