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 "A Layered Security Approach for Cloud Computing Infrastructure"):
  Abstract: This paper introduces a practical security model based on key security considerations by looking at a number of infrastructure aspects of Cloud Computing such as SaaS, Utility, Web, Platform and Managed Services, Service commerce platforms and Internet Integration which was introduced with a concise literature review. The purpose of this paper is to offer a macro level solution for identified common infrastructure security requirements. This model with a number of emerged patterns can be applied to infrastructure aspect of Cloud Computing as a proposed shared security approach in system development life cycle focusing on the plan-built-run scope.

Includes members:
  Member "Using Semantic Web Ontology for Intercloud Directories and Exchanges.":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Inter-Cloud architectures and application brokering: taxonomy and survey")
  Member "Cloud computing — Issues, research and implementations":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Scientific Workflow Management and the Kepler System")

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