human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "The influence of merging on h-type indices"):
  Abstract: Each information production process has a unique h-index. This paper studies the problem: what are possible h-index values if we merge two or more IPPs?

Includes members:
  Member "h-Index: A review focused in its variants, computation and standardization for different scientific fields":
    also connected through other hyperedges:
      (none)

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science