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 "AI’s War on Manipulation: Are We Winning?"):
  Abstract: We provide an overview of more than two decades of work, mostly in AI, that studies computational complexity as a barrier against manipulation in elections.

Includes members:
  Member "Universal voting protocol tweaks to make manipulation hard":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "On merging strategy-proofness")
  Member "Strategyproof approximations of distance rationalizable voting rules":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "Universal voting protocol tweaks to make manipulation hard")
  Member "An NTU cooperative game theoretic view of manipulating elections":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "Coalitional voting manipulation: a game-theoretic perspective")
  Member "Coalitional voting manipulation: a game-theoretic perspective":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "An NTU cooperative game theoretic view of manipulating elections")

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: Computer science