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: "gains of restricted secondary licensing in millimeter wave cellular systems"
  Abstract: Sharing the spectrum among multiple operators seems promising in millimeter wave (mmWave) systems. One explanation is the highly directional transmission in mmWave, which reduces the interference caused by one network on the other networks sharing the same resources. In this paper, we model a mmWave cellular system where an operator that primarily owns an exclusive-use license of a certain band can sell a restricted secondary license of the same band to another operator. This secondary network has a restriction on the maximum interference it can cause to the original network. Using stochastic geometry, we derive expressions for the coverage and rate of both networks, and establish the feasibility of secondary licensing in licensed mmWave bands. To explain economic trade-offs, we consider a revenue-pricing model for both operators in the presence of a central licensing authority. Our results show that the original operator and central network authority can benefit from secondary licensing when the maximum interference threshold is properly adjusted. This means that the original operator and central licensing authority have an incentive to permit a secondary network to restrictively share the spectrum. Our results also illustrate that the spectrum sharing gains increase with narrow beams and when the network densifies.

Connected through hyperedge HE-1 (induced by source paper "stochastic geometry modeling and analysis of finite millimeter wave wireless networks"):
  with members:
    - "spectral efficiency analysis of multi cell massive mimo systems with ricean fading"
    - "modeling and analyzing millimeter wave cellular systems"
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "enclosed mmwave wearable networks feasibility and performance"
    - "stochastic geometry modeling and analysis of single and multi cluster wireless networks"
    - "fundamentals of modeling finite wireless networks using binomial point process"
    - "a comparison of mimo techniques in downlink millimeter wave cellular networks with hybrid beamforming"
    - "performance analysis of outdoor mmwave ad hoc networks"

Connected through hyperedge HE-2 (induced by source paper "multi scale spectrum sensing in dense multi cell cognitive networks"):
  with members:
    - "a parallel algorithm for generating a random graph with a prescribed degree sequence"
    - "multi scale spectrum sensing in small cell mm wave cognitive wireless networks"
    - "understanding noise and interference regimes in 5g millimeter wave cellular networks"
    - "investigation of prediction accuracy sensitivity and parameter stability of large scale propagation path loss models for 5g wireless communications"
    - "cross layer design of distributed sensing estimation with quality feedback part i optimal schemes"
    - "cross layer estimation and control for cognitive radio exploiting sparse network dynamics"
    - "exploiting device to device communications in joint scheduling of access and backhaul for mmwave small cells"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"

Connected through hyperedge HE-3 (induced by source paper "multi scale spectrum sensing in 5g cognitive networks"):
  with members:
    - "multi scale spectrum sensing in small cell mm wave cognitive wireless networks"
    - "understanding noise and interference regimes in 5g millimeter wave cellular networks"
    - "cross layer design of distributed sensing estimation with quality feedback part i optimal schemes"
    - "cross layer estimation and control for cognitive radio exploiting sparse network dynamics"
    - "exploiting device to device communications in joint scheduling of access and backhaul for mmwave small cells"
    - "tractable model for rate in self backhauled millimeter wave cellular networks"
    - "coverage and rate analysis for millimeter wave cellular networks"
    - "what will 5g be"

Connected through hyperedge HE-4 (induced by source paper "capturing capacity and profit gains with base station sharing in mmwave cellular networks"):
  with members:
    - "resource sharing among mmwave cellular service providers in a vertically differentiated duopoly"
    - "resource sharing in 5g mmwave cellular networks"
    - "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"

Connected through hyperedge HE-5 (induced by source paper "applications of economic and pricing models for resource management in 5g wireless networks a survey"):
  with members:
    - "an auction approach to spectrum management in hetnets"
    - "user association in massive mimo hetnets"
    - "applications of economic and pricing models for wireless network security a survey"
    - "caching incentive design in wireless d2d networks a stackelberg game approach"
    - "breaking the economic barrier of caching in cellular networks incentives and contracts"
    - "distributed optimization of hierarchical small cell networks a gnep framework"
    - "spectrum and infrastructure sharing in millimeter wave cellular networks an economic perspective"
    - "caching as a service small cell caching mechanism design for service providers"

Connected through hyperedge HE-6 (induced by source paper "inter operator base station coordination in spectrum shared millimeter wave cellular networks"):
  with members:
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "hybrid spectrum sharing in mmwave cellular networks"
    - "resource sharing in 5g mmwave cellular networks"
    - "spectrum and infrastructure sharing in millimeter wave cellular networks an economic perspective"
    - "channel estimation for millimeter wave massive mimo with hybrid precoding over frequency selective fading channels"
    - "a comparison of mimo techniques in downlink millimeter wave cellular networks with hybrid beamforming"
    - "spectrum sharing in mmwave cellular networks via cell association coordination and beamforming"
    - "cooperative base station coloring for pair wise multi cell coordination"

Connected through hyperedge HE-7 (induced by source paper "hybrid spectrum sharing in mmwave cellular networks"):
  with members:
    - "stochastic geometric coverage analysis in mmwave cellular networks with a realistic channel model"
    - "resource sharing in 5g mmwave cellular networks"
    - "downlink and uplink cell association with traditional macrocells and millimeter wave small cells"
    - "spectrum and infrastructure sharing in millimeter wave cellular networks an economic perspective"
    - "understanding noise and interference regimes in 5g millimeter wave cellular networks"
    - "spectrum sharing in mmwave cellular networks via cell association coordination and beamforming"
    - "hybrid spectrum access for mmwave networks"
    - "on the value of beamforming and coordination for spectrum sharing in mmwave cellular networks"

Connected through hyperedge HE-8 (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"

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.IT(Information Theory)