human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "lower bounds on implementing robust and resilient mediators"
  Abstract: We consider games that have (k,t)-robust equilibria when played with a mediator, where an equilibrium is (k,t)-robust if it tolerates deviations by coalitions of size up to k and deviations by up to $t$ players with unknown utilities. We prove lower bounds that match upper bounds on the ability to implement such mediators using cheap talk (that is, just allowing communication among the players). The bounds depend on (a) the relationship between k, t, and n, the total number of players in the system; (b) whether players know the exact utilities of other players; (c) whether there are broadcast channels or just point-to-point channels; (d) whether cryptography is available; and (e) whether the game has a $k+t)-punishment strategy; that is, a strategy that, if used by all but at most $k+t$ players, guarantees that every player gets a worse outcome than they do with the equilibrium strategy.

Connected through hyperedge HE-1 (induced by source paper "the role of a priori information in networks of rational agents"):
  with members:
    - "reaching distributed equilibrium with limited id space"
    - "cheating by duplication equilibrium requires global knowledge"

Connected through hyperedge HE-2 (induced by source paper "fair leader election for rational agents in asynchronous rings and networks"):
  with members:
    - "rational fair consensus in the gossip model"
    - "cheating by duplication equilibrium requires global knowledge"
    - "rational secret sharing and multiparty computation extended abstract"

Connected through hyperedge HE-3 (induced by source paper "the power of mediation in an extended el farol game"):
  with members:
    - "on the value of correlation"

Connected through hyperedge HE-4 (induced by source paper "beyond nash equilibrium solution concepts for the 21st century"):
  with members:
    - "i don t want to think about it now decision theory with costly computation"
    - "iterated regret minimization a more realistic solution concept"
    - "game theory with costly computation"
    - "optimizing scrip systems efficiency crashes hoarders and altruists"
    - "extensive games with possibly unaware players"
    - "rational secret sharing and multiparty computation extended abstract"
    - "interactive unawareness revisited"
    - "a computer scientist looks at game theory"

Connected through hyperedge HE-5 (induced by source paper "game theory with costly computation"):
  with members:
    - "extensive games with possibly unaware players"
    - "rational secret sharing and multiparty computation extended abstract"

Connected through hyperedge HE-6 (induced by source paper "computer science and game theory a brief survey"):
  with members:
    - "graphical models for game theory"
    - "computationally feasible vcg mechanisms"
    - "rational secret sharing and multiparty computation extended abstract"
    - "a continuation method for nash equilibria in structured games"
    - "reasoning about knowledge of unawareness"
    - "how many candidates are needed to make elections hard to manipulate"
    - "competitive safety analysis robust decision making in multi agent systems"
    - "a computer scientist looks at game theory"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.GT(Computer Science and Game Theory)