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 "Exploring participation in the design of public library e-services"):
  Abstract: Public libraries are in crisis-mode trying to figure out their future. One area they are struggling with is their role and relationship to the Internet -- their e-services. This study engages public library staff, vendors and members in the redesign of online account management features as a way to look at participation from the perspective of the participants. Bringing together concerns, ideas and methodologies from the fields of librarianship, education, and Participatory Design, this study uses a Participatory Action Research approach to explore what we mean by participation and to identify barriers to achieving our ideal vision of participation.

Includes members:
  Member "Participatory design of public library e-services":
    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: Engineering