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: "COLLAGEN: A Collaboration Manager for Software Interface Agents"
  Abstract: We have implemented an application-independent collaboration manager, called Collagen, based on the SharedPlan theory of discourse, and used it to build a software interface agent for a simple air travel application. The software agent provides intelligent, mixed initiative assistance without requiring natural language understanding. A key benefit of the collaboration manager is the automatic construction of an interaction history which is hierarchically structured according to the user‘s and agent‘s goals and intentions.

Connected through hyperedge HE-1 (induced by source paper "Computational Creativity: Improv Agents and Conceptual Blending"):
  with members:
    (none)

Connected through hyperedge HE-2 (induced by source paper "Continual planning and acting in dynamic multiagent environments"):
  with members:
    - "Continual HTN robot task planning in open-ended domains: a case study"

Connected through hyperedge HE-3 (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"
    - "Workspaces: an architecture for editing collections of objects"
    - "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