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: "electric vehicle charging station network equilibrium models and pricing schemes"
  Abstract: In this paper, we develop and apply a framework to characterize network equilibrium traffic and charge patterns in an electric transportation network, mainly focused on the effect of heterogeneities in charging prices across different charging stations. Furthermore, we design optimal charging station prices that can jointly manage societal congestion and electricity costs. Our framework explores the effect of cost-minimizing users preferring different charging stations based on their charge amount and the charging stations' energy prices, and how this endogenous energy vs. route choice connection defines the threshold-based structure of flows at Wardrop equilibria. We discuss the uniqueness properties of the equilibria and showcase how first-best marginal cost-based pricing can enforce the socially optimal travel and charge behavior in the network, but only under certain charging station congestion models.

Connected through hyperedge HE-1 (induced by source paper "utilizing information optimally to influence distributed network routing"):
  with members:
    - "the importance of system level information in multiagent systems design cardinality and covering problems"
    - "distributed resource allocation through utility design part i optimizing the performance certificates via the price of anarchy"
    - "informational braess paradox the effect of information on traffic congestion"

Connected through hyperedge HE-2 (induced by source paper "optimal price of anarchy in cost sharing games"):
  with members:
    - "distributed resource allocation through utility design part i optimizing the performance certificates via the price of anarchy"
    - "the impact of local information on the performance of multiagent systems"
    - "spectrum sharing as 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)