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 association cells in random heterogeneous networks"
  Abstract: Characterizing user to access point (AP) association strategies in heterogeneous cellular networks (HetNets) is critical for their performance analysis, as it directly influences the load across the network. In this letter, we introduce and analyze a class of association strategies, which we term stationary association, and the resulting association cells. For random HetNets, where APs are distributed according to a stationary point process, the area of the resulting association cells are shown to be the marks of the corresponding point process. Addressing the need of quantifying the load experienced by a typical user, a "Feller-paradox" like relationship is established between the area of the association cell containing origin and that of a typical association cell. For the specific case of Poisson point process and max power/SINR association, the mean association area of each tier is derived and shown to increase with channel gain variance and decrease in the path loss exponents of the corresponding tier.

Connected through hyperedge HE-1 (induced by source paper "millimeter wave integrated access and backhaul in 5g performance analysis and design insights"):
  with members:
    - "integrated access and backhaul in 5g mmwave networks potentials and challenges"
    - "a tractable analysis of the blind spot probability in localization networks under correlated blocking"
    - "end to end simulation of integrated access and backhaul at mmwaves"
    - "max min rates in self backhauled millimeter wave cellular networks"
    - "distributed path selection strategies for integrated access and backhaul at mmwaves"
    - "modeling and analyzing millimeter wave cellular systems"
    - "integrated mmwave access and backhaul in 5g bandwidth partitioning and downlink analysis"
    - "capacity scaling of cellular networks impact of bandwidth infrastructure density and number of antennas"

Connected through hyperedge HE-2 (induced by source paper "on muting mobile terminals for uplink interference mitigation in hetnets system level analysis via stochastic geometry"):
  with members:
    - "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "multi user coverage probability of uplink cellular systems a stochastic geometry approach"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"

Connected through hyperedge HE-3 (induced by source paper "scalable spectrum allocation and user association in networks with many small cells"):
  with members:
    - "energy management in heterogeneous networks with cell activation user association and interference coordination"
    - "energy efficient cell activation user association and spectrum allocation in heterogeneous networks"
    - "traffic driven spectrum allocation in heterogeneous networks"
    - "distributed pricing based user association for downlink heterogeneous cellular networks"
    - "base station activation and linear transceiver design for optimal resource management in heterogeneous networks"
    - "distributed linear precoder optimization and base station selection for an uplink heterogeneous network"
    - "user association for load balancing in heterogeneous cellular networks"

Connected through hyperedge HE-4 (induced by source paper "design and analysis of initial access in millimeter wave cellular networks"):
  with members:
    - "modeling and analyzing millimeter wave cellular systems"
    - "initial beam association in millimeter wave cellular systems analysis and design insights"
    - "tractable resource management with uplink decoupled millimeter wave overlay in ultra dense cellular networks"
    - "comparative analysis of initial access techniques in 5g mmwave cellular networks"
    - "beamforming tradeoffs for initial ue discovery in millimeter wave mimo systems"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "millimeter wave cellular networks a mac layer perspective"
    - "directional initial access for millimeter wave cellular systems"

Connected through hyperedge HE-5 (induced by source paper "unified stochastic geometry modeling and analysis of cellular networks in los nlos and shadowed fading"):
  with members:
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "unified stochastic geometry model for mimo cellular networks with retransmissions"
    - "coverage analysis in downlink poisson cellular network with kappa mu shadowed fading"
    - "modeling cellular networks in fading environments with dominant specular components"
    - "on modeling coverage and rate of random cellular networks under generic channel fading"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"
    - "hethetnets heterogeneous traffic distribution in heterogeneous wireless cellular networks"
    - "downlink cellular network analysis with multi slope path loss models"

Connected through hyperedge HE-6 (induced by source paper "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"):
  with members:
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"
    - "analysis of the decoupled access for downlink and uplink in wireless heterogeneous networks"
    - "on stochastic geometry modeling of cellular uplink transmission with truncated channel inversion power control"
    - "joint rate and sinr coverage analysis for decoupled uplink downlink biased cell associations in hetnets"
    - "multi user coverage probability of uplink cellular systems a stochastic geometry approach"
    - "downlink and uplink decoupling a disruptive architectural design for 5g networks"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "downlink rate distribution in heterogeneous cellular networks under generalized cell selection"

Connected through hyperedge HE-7 (induced by source paper "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"):
  with members:
    - "performance impact of los and nlos transmissions in dense cellular networks"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "effect of los nlos propagation on ultra dense networks"
    - "stochastic geometry modeling of cellular networks analysis simulation and experimental validation"
    - "performance impact of los and nlos transmissions in small cell networks"
    - "downlink cellular network analysis with multi slope path loss models"
    - "on the joint impact of beamwidth and orientation error on throughput in directional wireless poisson networks"
    - "analysis of blockage effects on urban cellular networks"

Connected through hyperedge HE-8 (induced by source paper "load optimization with user association in cooperative and load coupled lte networks"):
  with members:
    - "load balancing via joint transmission in heterogeneous lte modeling and computation"
    - "joint downlink base station association and power control for max min fairness computation and complexity"
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "optimal user association for massive mimo empowered ultra dense wireless networks"
    - "a tractable model for noncoherent joint transmission base station cooperation"
    - "what will 5g be"
    - "analysis of cell load coupling for lte network planning and optimization"
    - "user association for load balancing in heterogeneous cellular 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.IT(Information Theory)