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: "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.

Connected through hyperedge HE-1 (induced by source paper "Moversight: a group communication protocol for mobile scenarios"):
  with members:
    (none)

Connected through hyperedge HE-2 (induced by source paper "A Continuous Media Player"):
  with members:
    - "Synchronization and storage models for multimedia objects"
    - "Popularity-based assignment of movies to storage devices in a video-on-demand system"

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