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: "spatial sinr games combining base station placement and mobile association"
  Abstract: We study in this paper the question of determining locations of base stations (BSs) that may belong to the same or to competing service providers, taking into account the impact of these decisions on the behavior of intelligent mobile terminals who can connect to the base station that offers the best utility. We first study the SINR association-game: we determine the cells corresponding to each base stations, i.e. the locations at which mobile terminals prefer to connect to a given base station than to other. The Signal to Interference and Noise Ratio (SINR) is used as the quantity that determines the association. We make some surprising observations: (i) displacing a base station a little in one direction may result in a displacement of the boundary of the corresponding cell to the opposite direction; (ii) A cell corresponding to a BS may be the union of disconnected sub-cells. We then study the Stackelberg equilibrium in the combined BS location and mobile association problem: we determine where to locate the BSs so as to maximize the revenues obtained at the induced SINR mobile association game. We consider the cases of single frequency band and two frequency bands of operation. Finally, we also consider Stackelberg equilibria in two frequency systems with successive interference cancellation.

Connected through hyperedge HE-1 (induced by source paper "the interplay of competition and cooperation among service providers part ii"):
  with members:
    - "the economics of competition and cooperation between mnos and mvnos"
    - "spectrum leasing and cooperative resource allocation in cognitive ofdma networks"
    - "investment and pricing with spectrum uncertainty a cognitive operator s perspective"
    - "spectrum sharing between wireless networks"

Connected through hyperedge HE-2 (induced by source paper "exploiting dual connectivity in heterogeneous cellular networks"):
  with members:
    - "optimizing user association and activation fractions in heterogeneous wireless networks"
    - "distributed power allocations in heterogeneous networks with dual connectivity using backhaul state information"
    - "proportional fair traffic splitting and aggregation in heterogeneous wireless networks"
    - "sum rate maximizing cell association via dual connectivity"
    - "an overview of load balancing in hetnets old myths and open problems"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "user association for load balancing in heterogeneous cellular networks"

Connected through hyperedge HE-3 (induced by source paper "optimizing user association and activation fractions in heterogeneous wireless networks"):
  with members:
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "optimal user cell association for massive mimo wireless networks"
    - "analysis of cell load coupling for lte network planning and optimization"
    - "user association for load balancing in heterogeneous cellular networks"
    - "robust linear precoder design for multi cell downlink transmission"

Connected through hyperedge HE-4 (induced by source paper "more about base station location games"):
  with members:
    - "nash equilibria in voronoi games on graphs"
    - "on the continuous fermat weber problem"

Connected through hyperedge HE-5 (induced by source paper "stochastic geometry based medium access games in mobile ad hoc networking"):
  with members:
    - "stochastic analysis of non slotted aloha in wireless ad hoc networks"

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.NI(Networking and Internet Architecture)