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 "Cloud computing — Issues, research and implementations"):
  Abstract: ldquoCloudrdquo computing - a relatively recent term, builds on decades of research in virtualization, distributed computing, utility computing, and more recently networking, web and software services. It implies a service oriented architecture, reduced information technology overhead for the end-user, great flexibility, reduced total cost of ownership, on-demand services and many other things. This paper discusses the concept of ldquocloudrdquo computing, issues it tries to address, related research topics, and a ldquocloudrdquo implementation available today.

Includes members:
  Member "Scientific Workflow Management and the Kepler System":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Solution Workflows for Model-Based Analysis of Complex Systems")
  Member "SLA-based admission control for a Software-as-a-Service provider in Cloud computing environments":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Quality of service approaches in cloud computing")
  Member "A Layered Security Approach for Cloud Computing Infrastructure":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "Using Semantic Web Ontology for Intercloud Directories and Exchanges.")

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