I would like to develop a recommendation system (probably hybrid, user-based and feature-based) for items which are organized in a tree (there are categories, divided in sub-categories, divided in sub-sub-categories). The branches have different depths. An item is associated to a unique node of this tree, and it can be at any level. The tree has about 100 nodes, and it is probably the most important information I have about my items.

Here is what I found so far :

Would you have any advice ?

Thank you

  • $\begingroup$ I actually found, thanks to the stackexchange keyworfs, that it seems to be called "categorical data"; feel free to answer with any recommendation for my specific case; $\endgroup$ – Corlin Apr 27 '20 at 7:35

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