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: "on the role of infrastructure sharing for mobile network operators in emerging markets"
  Abstract: The traditional model of single ownership of all the physical network elements and network layers by mobile network operators is beginning to be challenged. This has been attributed to the rapid and complex technology migration compounded with rigorous regulatory requirements and ever increasing capital expenditures. These trends, combined together with the increasing competition, rapid commoditization of telecommunication equipments and rising separation of network and service provisioning are pushing the operators to adopt multiple strategies, with network infrastructure sharing in the core and radio access networks emerging as a more radical mechanism to substantially and sustainably improve network costs. Through infrastructure sharing, developing countries and other emerging economies can harness the technological, market and regulatory developments that have fostered affordable access to mobile and broadband services. Similarly, the network operators entering or consolidating in the emerging markets can aim for substantial savings on capital and operating expenses. The present paper aims to investigate the current technological solutions and regulatory and the technical-economical dimensions in connection with the sharing of mobile telecommunication networks in emerging countries. We analyze the estimated savings on capital and operating expenses, while assessing the technical constraints, applicability and benefits of the network sharing solutions in an emerging market context.

Connected through hyperedge HE-1 (induced by source paper "survey on uav cellular communications practical aspects standardization advancements regulation and security challenges"):
  with members:
    - "understanding uav cellular communications from existing networks to massive mimo"
    - "supporting uav cellular communications through massive mimo"
    - "uav aided offloading for cellular hotspot"
    - "the essential guide to realizing 5g connected uavs with massive mimo"
    - "performance analysis for practical unmanned aerial vehicle networks with los nlos transmissions"
    - "promises and caveats of uplink iot ultra dense networks"
    - "the sky is not the limit lte for unmanned aerial vehicles"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"

Connected through hyperedge HE-2 (induced by source paper "modeling co location in multi operator mmwave networks with spectrum sharing"):
  with members:
    - "inter operator base station coordination in spectrum shared millimeter wave cellular networks"
    - "hybrid spectrum sharing in mmwave cellular networks"
    - "quantifying the benefits of infrastructure sharing"
    - "resource sharing among mmwave cellular service providers in a vertically differentiated duopoly"
    - "a primer on cellular network analysis using stochastic geometry"
    - "resource sharing in 5g mmwave cellular networks"
    - "investigation of prediction accuracy sensitivity and parameter stability of large scale propagation path loss models for 5g wireless communications"
    - "spectrum sharing in mmwave cellular networks via cell association coordination and beamforming"

Connected through hyperedge HE-3 (induced by source paper "modeling infrastructure sharing in mmwave networks with shared spectrum licenses"):
  with members:
    - "inter operator base station coordination in spectrum shared millimeter wave cellular networks"
    - "hybrid spectrum sharing in mmwave cellular networks"
    - "quantifying the benefits of infrastructure sharing"
    - "resource sharing among mmwave cellular service providers in a vertically differentiated duopoly"
    - "a primer on cellular network analysis using stochastic geometry"
    - "resource sharing in 5g mmwave cellular networks"
    - "investigation of prediction accuracy sensitivity and parameter stability of large scale propagation path loss models for 5g wireless communications"
    - "spectrum sharing in mmwave cellular networks via cell association coordination and beamforming"

Connected through hyperedge HE-4 (induced by source paper "resource sharing among mmwave cellular service providers in a vertically differentiated duopoly"):
  with members:
    - "the potential of resource sharing in 5g millimeter wave bands"
    - "resource sharing in 5g mmwave cellular networks"
    - "gains of restricted secondary licensing in millimeter wave cellular systems"
    - "a sharing and competition aware framework for cellular network evolution planning"
    - "on the feasibility of sharing spectrum licenses in mmwave cellular systems"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-5 (induced by source paper "radio access network and spectrum sharing in mobile networks a stochastic geometry perspective"):
  with members:
    - "a primer on cellular network analysis using stochastic geometry"
    - "resource sharing in 5g mmwave cellular networks"
    - "on spectrum and infrastructure sharing in multi operator cellular networks"
    - "poisson hole process theory and applications to wireless networks"
    - "gains of restricted secondary licensing in millimeter wave cellular systems"
    - "co primary multi operator resource sharing for small cell networks"
    - "technical rate of substitution of spectrum in future mobile broadband provisioning"
    - "on the feasibility of sharing spectrum licenses in mmwave cellular systems"

Connected through hyperedge HE-6 (induced by source paper "spectrum and infrastructure sharing in millimeter wave cellular networks an economic perspective"):
  with members:
    - "the potential of resource sharing in 5g millimeter wave bands"
    - "resource sharing in 5g mmwave cellular networks"
    - "spectrum pooling in mmwave networks opportunities challenges and enablers"
    - "a sharing and competition aware framework for cellular network evolution planning"
    - "on the feasibility of sharing spectrum licenses in mmwave cellular systems"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "millimeter wave channel modeling and cellular capacity evaluation"
    - "the urge to merge when cellular service providers pool capacity"

Connected through hyperedge HE-7 (induced by source paper "energy group buying with loading sharing for green cellular networks"):
  with members:
    - "green 5g heterogeneous networks through dynamic small cell operation"
    - "comp meets smart grid a new communication and energy cooperation paradigm"
    - "bargaining based mobile data offloading"
    - "what will 5g be"
    - "joint energy and spectrum cooperation for cellular communication systems"
    - "cost aware green cellular networks with energy and communication cooperation"
    - "cooperative energy trading in comp systems powered by smart grids"
    - "energy cooperation in cellular networks with renewable powered base stations"

Connected through hyperedge HE-8 (induced by source paper "cost efficiency for economical mobile data traffic management from users perspective"):
  with members:
    - "what will 5g be"
    - "a survey of smart data pricing past proposals current plans and future trends"

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)