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: "hotelling downs model with limited attraction"
  Abstract: In this paper we study variations of the standard Hotelling-Downs model of spatial competition, where each agent attracts the clients in a restricted neighborhood, each client randomly picks one attractive agent for service. #R##N#Two utility functions for agents are considered: support utility and winner utility. We generalize the results by Feldman et al. to the case where the clients are distributed arbitrarily. In the support utility setting, we show that a pure Nash equilibrium always exists by formulating the game as a potential game. In the winner utility setting, we show that there exists a Nash equilibrium in two cases: when there are at most 3 agents and when the size of attraction area is at least half of the entire space. We also consider the price of anarchy and the fairness of equilibria and give tight bounds on these criteria.

Connected through hyperedge HE-1 (induced by source paper "hotelling games with random tolerance intervals"):
  with members:
    - "from hotelling to load balancing approximation and the principle of minimum differentiation"
    - "fault tolerant hotelling games"
    - "hotelling games with multiple line faults"
    - "political discourse on social media echo chambers gatekeepers and the price of bipartisanship"
    - "shapley facility location games"
    - "hotelling games on networks existence and efficiency of equilibria"
    - "mechanism design with uncertain inputs to err is human to forgive divine"
    - "robust fault tolerant uncapacitated facility location"

Connected through hyperedge HE-2 (induced by source paper "manipulating elections by selecting issues"):
  with members:
    - "randomized social choice functions under metric preferences"
    - "normalized range voting broadly resists control"
    - "control complexity in fallback voting"
    - "the complexity of probabilistic lobbying"
    - "sincere strategy preference based approval voting fully resists constructive control and broadly resists destructive control"
    - "how hard is bribery in elections"
    - "hybrid elections broaden complexity theoretic resistance to control"
    - "anyone but him the complexity of precluding an alternative"

Connected through hyperedge HE-3 (induced by source paper "from hotelling to load balancing approximation and the principle of minimum differentiation"):
  with members:
    - "shapley facility location games"
    - "location games on networks existence and efficiency of equilibria"
    - "on voting and facility location"
    - "voronoi game on graphs"
    - "on the power of deterministic mechanisms for facility location games"
    - "nash equilibria in voronoi games on graphs"

Connected through hyperedge HE-4 (induced by source paper "from recommendation systems to facility location games"):
  with members:
    - "convergence of learning dynamics in information retrieval games"
    - "a game theoretic approach to recommendation systems with strategic content providers"
    - "shapley facility location games"

Connected through hyperedge HE-5 (induced by source paper "shapley facility location games"):
  with members:
    - "the one round voronoi game replayed"

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)