I find there are some questions about sets, but there isn't any tag about it.
I would like to ask questions about them and learn more about them. Thus I thought about creating a new set tag to group the questions.
Currently most questions I see are about different similarity metrics between sets or about rank based analysis of sets like gene set enrichment analysis.
Proposed tag wiki excerpt:
For questions about analysis of groups of nominal variables
Prototype of a full tag wiki :
A set (See definition) can be defined as a group of elements:
set1 = element1, element2, element3
Questions might be about similarity indices, or analysis on them.
PS: Are here some knowledge on operations and tests?