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 "Building Secure and Reliable Network Applications"):
  Abstract: From the Publisher:
As the 'network is the computer' slogan becomes reality so reliability and security of networked applications become more important. Not only are hospitals, air traffic control systems, and telephone systems becoming more networked, but business applications are increasingly based on the open world of the internet. Stability in the face of minor accidents, software or hardware failures, or outright attack has become vital. This book provides a structured description of the technologies currently available for building reliable solutions to these problems.

Includes members:
  Member "A Continuous Media Player":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Synchronization and storage models for multimedia objects")
  Member "Moversight: a group communication protocol for mobile scenarios":
    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