Hi all, I'm using the tag system to classify the documents I've read, which is much more practical than collection. For example, A paper might say, he used an experiment or/and a simulation method, he used sandstone or/and limestone, he changed the variable A or/and the variable B, he calculated the parameter X or/and the parameter Y.The tag system is talent, which can allow us to quickly find papers with different tags and improve search efficiency.

Because I have set a lot of tags, I can't remember which tags I have set before. Therefore, when I read the new paper, I can only remember and mark a few tags, generating more similar tags.

I was wondering whether there could be a view to display a chain tag system. For example, I read a new literature and marked a series of tags according to the chain tag system I set, instead of searching the existing tag in the tag window based on my recall.

It could be like:

category A -- category B -- category C -- category D...
-tag A1.........-tag B1......... -tag C1..........-tag D1
-tag A2.........-tag B2..........-tag C1..........-tag D1

e.g.

methods.......... fluid........... media.................focus on...
-CTRW............-brine.........-sandstone.........-permeability
-level set........-oil.............-limestone..........-pressure
-MIS..............-CH4..........-monoplates.......-gravity

Thanks for your consideration!