Co-Occurence Unit Terminology

[rhpoon]

Hi I read the ModelTrainingParameters.cs about the parameters setup and definetion.

Out of my limited study, I tend to think or suggest that the Co-Occurrence unit is more referring to a levelling:

User Level - measure co-occurence of items in same user (regardless of time/date)
TimeDate Level - on top of same user, it further measure whether it is same date/time (for the same user)

If my understanding, based on the /// comments as given, then the wording or term "level" would be more appropriate, as "Co-occurence Unit" as standalone may refer to:

User - items bought by same user (regardless of time/date)
TimeStamp - items bought within the same time stamp (mostly it is by the same user, but if there are multiple check out machine / POS.... they may come from different users

So there would be a subtle / potential difference and this also puzzle beginners to this recommender system (esp the use of term here slightly deviate from literature elsewhere (co-occurrence refer more to products/items matrix or dimension *.

*It may be such as case at the implementation internal of the software that such as matrix is established (Product Co-Ocurrence Matrix for same user or same time stamp), however the term presented as such cause confusion for serious learner.

Hence the wording: Co-occurrence Level or Focus is suggested (especially the word Unit may also refer to quantity).