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: "Client system for realistic broadcasting: a first prototype"
  Abstract: This paper presents a prototype of a client system for Realistic Broadcasting that can receive and process immersive media. It provides a viewer which supports stereoscopic video display and haptic interaction with the displayed media. The structure of the system is introduced and each component is described. In order to show the feasibility of Realistic Broadcasting, a home shopping channel scenario is applied to the system and its demonstration is performed in an exhibition. We also discuss users' comments and directions for improving of Realistic Broadcasting.

Connected through hyperedge HE-1 (induced by source paper "Realistic broadcasting using multi-modal immersive media"):
  with members:
    (none)

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