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: "analytical evaluation of fractional frequency reuse for ofdma cellular networks"
  Abstract: Fractional frequency reuse (FFR) is an interference management technique well-suited to OFDMA-based cellular networks wherein the bandwidth of the cells is partitioned into regions with different frequency reuse factors. To date, FFR techniques have been typically been evaluated through system-level simulations using a hexagonal grid for the base station locations. This paper instead focuses on analytically evaluating the two main types of FFR deployments - Strict FFR and Soft Frequency Reuse (SFR) - using a Poisson point process to model the base station locations. The results are compared with the standard grid model and an actual urban deployment. Under reasonable special cases for modern cellular networks, our results reduce to simple closed-form expressions, which provide insight into system design guidelines and the relative merits of Strict FFR, SFR, universal reuse, and fixed frequency reuse. Finally, a SINR-proportional resource allocation strategy is proposed based on the analytical expressions and we observe that FFR provides an increase in the sum-rate as well as the well-known benefit of improved coverage for cell-edge users.

Connected through hyperedge HE-1 (induced by source paper "a unified framework for the tractable analysis of multi antenna wireless networks"):
  with members:
    - "3gpp inspired hetnet model using poisson cluster process sum product functionals and downlink coverage"
    - "coverage analysis for millimeter wave networks the impact of directional antenna arrays"
    - "a tractable framework for performance analysis of dense multi antenna networks"
    - "ergodic spectral efficiency in mimo cellular networks"
    - "asymptotics and approximation of the sir distribution in general cellular networks"
    - "success probability and area spectral efficiency in multiuser mimo hetnets"
    - "downlink cellular network analysis with multi slope path loss models"
    - "user centric intercell interference nulling for downlink small cell networks"

Connected through hyperedge HE-2 (induced by source paper "treating interference as noise in cellular networks a stochastic geometry approach"):
  with members:
    - "system level modeling and optimization of the energy efficiency in cellular networks a stochastic geometry framework"
    - "downlink and uplink decoupling in two tier heterogeneous networks with multi antenna base stations"
    - "backscatter communications for the internet of things a stochastic geometry approach"
    - "enhanced cellular coverage and throughput using rateless codes"
    - "analytical modeling of interference aware power control for the uplink of heterogeneous cellular networks"
    - "stochastic geometry modeling and analysis of multi tier millimeter wave cellular networks"
    - "optimality of treating interference as noise a combinatorial perspective"
    - "coverage and rate analysis for millimeter wave cellular networks"

Connected through hyperedge HE-3 (induced by source paper "resource allocation and interference management in ofdma based vlc networks"):
  with members:
    - "design of a cognitive vlc network with illumination and handover requirements"
    - "dynamic channel allocation for class based qos provisioning and call admission in visible light communication"
    - "on the capacity of free space optical intensity channels"

Connected through hyperedge HE-4 (induced by source paper "outage probability and rate for kappa mu shadowed fading in interference limited scenario"):
  with members:
    - "the kappa mu shadowed fading model with integer fading parameters"
    - "on the sum of correlated squared kappa mu shadowed random variables and its application to performance analysis of mrc"
    - "statistical characterization of kappa mu shadowed fading"

Connected through hyperedge HE-5 (induced by source paper "effects of base station spatial interdependence on interference correlation and network performance"):
  with members:
    - "temporal correlation of interference and outage in mobile networks over one dimensional finite regions"
    - "spatio temporal interference correlation and joint coverage in cellular networks"
    - "network densification in 5g from the short range communications perspective"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "the intensity matching approach a tractable stochastic geometry approximation to system level analysis of cellular networks"
    - "cache enabled heterogeneous cellular networks optimal tier level content placement"
    - "analysis of interference correlation in non poisson networks"
    - "optimizing user association and spectrum allocation in hetnets a utility perspective"

Connected through hyperedge HE-6 (induced by source paper "load aware performance analysis of cell center edge users in random hetnets"):
  with members:
    - "a primer on cellular network analysis using stochastic geometry"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "load aware modeling and analysis of heterogeneous cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling heterogeneous network interference using poisson point processes"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "analytical evaluation of fractional frequency reuse for heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"

Connected through hyperedge HE-7 (induced by source paper "on modeling coverage and rate of random cellular networks under generic channel fading"):
  with members:
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"
    - "average rate of downlink heterogeneous cellular networks over generalized fading channels a stochastic geometry approach"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"
    - "uplink capacity and interference avoidance for two tier femtocell networks"

Connected through hyperedge HE-8 (induced by source paper "analytical coverage probability of a typical user in heterogeneous cellular networks"):
  with members:
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "structured spectrum allocation and user association in heterogeneous cellular networks"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink 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)