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: "Workspaces: an architecture for editing collections of objects"
  Abstract: Many tools create new user interfaces by compositing them out of smaller pieces. This usually leads to variations on the dialog box to edit a single composite object. Workspaces are a model for compositing together various editors to manipulate sets of objects and their attributes. The workspace components communicate in terms of a  selected set  and the attributes possessed by objects in that set. This model has been implemented as part of the Sushi UIMS.

Connected through hyperedge HE-1 (induced by source paper "Window real objects: a distributed shared memory for distributed implementation of GUI applications"):
  with members:
    - "SOL: a shared object toolkit for cooperative interfaces"

Connected through hyperedge HE-2 (induced by source paper "Garnet: comprehensive support for graphical, highly interactive user interfaces"):
  with members:
    - "Forms/3: A first-order visual language to explore the boundaries of the spreadsheet paradigm"
    - "COLLAGEN: A Collaboration Manager for Software Interface Agents"
    - "A software model and specification language for non-WIMP user interfaces"
    - "The Rendezvous architecture and language for constructing multiuser applications"
    - "The Programming Language Aspects of ThingLab, a Constraint-Oriented Simulation Laboratory"

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