I am trying to create a recommendation system. I would like to recommend users to subscribe to topics based on topics they already have subscribed to. As mentioned in here, there is a requirement of 1 metadata field for the users and items (topics in my case) schemas. I couldn't find any worthy field to put there.
Why is it a requirement? What should I do then? How impactful is it on the final recommendations score if I leave it blank? Am I missing any other way to solve that issue? Do you think that aws personalize is a good fit for my problem?
Seems like it is not mandatory to create all three dataset types. I found it out from aws-personalize-samles. Couldn't figure it out from the docs. I thought of deleting this question, because it might be a too much of a noob question (seems like it from the downvoting), but heck, if it may shorten someone else time to figure it out by finding the samples, I will leave it as is.
Sorry if I annoyed some people!