human: Given a node-centered hypergraph: <hypergraph>, where nodes represent authors and hyperedges represent groups of authors who co-authored the same paper.

Details of the hypergraph:
Center node: "Mappings, maps and tables: towards formal semantics for associations in UML2"
  Abstract: In fact, UML2 offers two related yet different definitions of associations. One is implicit in several  Description  and  Semantics  sections of the specification and belongs to the UML folklore. It simply says that an association is a set of links. The other – official and formal – definition is explicitly fixed by the UML metamodel and shows that there is much more to associations than just being sets of links. Particularly, association ends can be owned by either participating classes or by the very association (with a striking difference between binary and multiary associations), be navigable or not, and have some constraints on combining ownership and navigability.   The paper presents a formal framework, based on sets and mappings, where all notions involved in the both definitions can be accurately explained and formally explicated. Our formal definitions allow us to reconcile the two views of associations, unify ownership for binary and multiary associations and, finally, detect a few flaws in the association part of the UML2 metamodel.

Connected through hyperedge HE-1 (induced by source paper "On the Semantics of Associations and Association Ends in UML"):
  with members:
    (none)

Question: Please tell me which research area the center author belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science