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: "a geometric interpretation of fading in wireless networks theory and applications"
  Abstract: In wireless networks with random node distribution, the underlying point process model and the channel fading process are usually considered separately. A unified framework is introduced that permits the geometric characterization of fading by incorporating the fading process into the point process model. Concretely, assuming nodes are distributed in a stationary Poisson point process in $\R^d$, the properties of the point processes that describe the path loss with fading are analyzed. The main applications are connectivity and broadcasting.

Connected through hyperedge HE-1 (induced by source paper "secrecy analysis of random mimo wireless networks over alpha mu fading channels"):
  with members:
    - "on secrecy performance of antenna selection aided mimo systems against eavesdropping"
    - "physical layer security in millimeter wave cellular networks"
    - "performance analysis for physical layer security in multi antenna downlink networks with limited csi feedback"
    - "the secrecy graph and some of its properties"

Connected through hyperedge HE-2 (induced by source paper "ergodic spectral efficiency in mimo cellular networks"):
  with members:
    - "modeling and analysis of cellular networks using stochastic geometry a tutorial"
    - "enriched k tier hetnet model to enable the analysis of user centric small cell deployments"
    - "scaling laws for ergodic spectral efficiency in mimo poisson networks"
    - "wireless network signals with moderately correlated shadowing still appear poisson"
    - "gaussian approximation for the downlink interference in heterogeneous cellular networks"
    - "analytical tractability of hexagonal network model with random user location"
    - "asymptotics and approximation of the sir distribution in general cellular networks"
    - "an analytical framework for device to device communication in cellular networks"

Connected through hyperedge HE-3 (induced by source paper "comments and reply comments on cooperative density estimation in random wireless ad hoc networks"):
  with members:
    - "distance distributions in finite uniformly random networks theory and applications"

Connected through hyperedge HE-4 (induced by source paper "wireless networks appear poissonian due to strong shadowing"):
  with members:
    - "a stochastic geometry framework for analyzing pairwise cooperative cellular networks"
    - "studying the sinr process of the typical user in poisson networks by using its factorial moment measures"
    - "statistical modeling and probabilistic analysis of cellular networks with determinantal point processes"
    - "the ginibre point process as a model for wireless networks with repulsion"
    - "analysis of non coherent joint transmission cooperation in heterogeneous cellular networks"
    - "successive interference cancellation in heterogeneous cellular networks"
    - "sinr based k coverage probability in cellular networks with arbitrary shadowing"
    - "equivalence and comparison of heterogeneous cellular networks"

Connected through hyperedge HE-5 (induced by source paper "the performance of successive interference cancellation in random wireless networks"):
  with members:
    - "a stochastic geometry analysis of inter cell interference coordination and intra cell diversity"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink coverage analysis in a heterogeneous cellular network"
    - "enhanced intercell interference coordination challenges in heterogeneous networks"
    - "transmission capacity of ad hoc networks with spatial diversity"

Connected through hyperedge HE-6 (induced by source paper "connectivity in dense networks confined within right prisms"):
  with members:
    - "towards a better understanding of large scale network models"
    - "hierarchical cooperation achieves optimal capacity scaling in ad hoc networks"
    - "extremal properties of three dimensional sensor networks with applications"

Connected through hyperedge HE-7 (induced by source paper "coverage and throughput analysis with a non uniform small cell deployment"):
  with members:
    - "a versatile dependent model for heterogeneous cellular networks"
    - "analytical evaluation of coverage oriented femtocell network deployment"
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink capacity and base station density in cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"
    - "analytical evaluation of fractional frequency reuse for ofdma cellular networks"

Connected through hyperedge HE-8 (induced by source paper "analytical evaluation of coverage oriented femtocell network deployment"):
  with members:
    - "offloading in heterogeneous networks modeling analysis and design insights"
    - "heterogeneous cellular networks with flexible cell association a comprehensive downlink sinr analysis"
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "a tractable approach to coverage and rate in cellular networks"
    - "analytical evaluation of fractional frequency reuse for ofdma cellular networks"
    - "coverage in multi antenna two tier networks"
    - "femtocell networks a survey"

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)