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: "nash and wardrop equilibria in aggregative games with coupling constraints"
  Abstract: We consider the framework of aggregative games, in which the cost function of each agent depends on his own strategy and on the average population strategy. As first contribution, we investigate the relations between the concepts of Nash and Wardrop equilibria. By exploiting a characterization of the two equilibria as solutions of variational inequalities, we bound their distance with a decreasing function of the population size. As second contribution, we propose two decentralized algorithms that converge to such equilibria and are capable of coping with constraints coupling the strategies of different agents. Finally, we study the applications of charging of electric vehicles and of route choice on a road network.

Connected through hyperedge HE-1 (induced by source paper "pricing in resource allocation games based on lagrangean duality and convexification"):
  with members:
    - "sensitivity analysis for convex separable optimization over integral polymatroids"
    - "totally unimodular congestion games"
    - "combinatorial walrasian equilibrium"
    - "polyhedral clinching auctions and the adwords polytope"
    - "optimal pricing in networks with externalities"
    - "congestion games with variable demands"

Connected through hyperedge HE-2 (induced by source paper "efficient estimation of equilibria in large aggregative games with coupling constraints"):
  with members:
    - "parametrized nash equilibria in atomic splittable congestion games via weighted block laplacians"
    - "nonsmooth aggregative games with coupling constraints and infinitely many classes of players"
    - "routing game on parallel networks the convergence of atomic to nonatomic"
    - "coalitions in nonatomic network congestion games"

Connected through hyperedge HE-3 (induced by source paper "the importance of system level information in multiagent systems design cardinality and covering problems"):
  with members:
    - "the impact of local information on the performance of multiagent systems"
    - "multiagent maximum coverage problems the trade off between anarchy and stability"

Connected through hyperedge HE-4 (induced by source paper "semi decentralized coordinated online learning for continuous games with coupled constraints via augmented lagrangian"):
  with members:
    - "online convex optimization and no regret learning algorithms guarantees and applications"
    - "trading regret for efficiency online convex optimization with long term constraints"

Connected through hyperedge HE-5 (induced by source paper "distributed resource allocation through utility design part i optimizing the performance certificates via the price of anarchy"):
  with members:
    - "game efficiency through linear programming duality"
    - "multiagent maximum coverage problems the trade off between anarchy and stability"
    - "the price of anarchy in auctions"
    - "a unifying tool for bounding the quality of non cooperative solutions in weighted congestion games"

Connected through hyperedge HE-6 (induced by source paper "efficient estimation of equilibria of large congestion games with heterogeneous players"):
  with members:
    - "nonsmooth aggregative games with coupling constraints and infinitely many classes of players"
    - "routing game on parallel networks the convergence of atomic to nonatomic"
    - "a distributed algorithm for average aggregative games with coupling constraints"

Connected through hyperedge HE-7 (induced by source paper "utility design for distributed resource allocation part i characterizing and optimizing the exact price of anarchy"):
  with members:
    - "tight approximation bounds for maximum multi coverage"
    - "game efficiency through linear programming duality"
    - "a unifying tool for bounding the quality of non cooperative solutions in weighted congestion games"

Connected through hyperedge HE-8 (induced by source paper "routing game on parallel networks the convergence of atomic to nonatomic"):
  with members:
    - "nonsmooth aggregative games with coupling constraints and infinitely many classes of players"
    - "coalitions in nonatomic network congestion games"

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.SY(Systems and Control)