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: "continuum percolation in the intrinsically secure communications graph"
  Abstract: The intrinsically secure communications graph (iS-graph) is a random graph which captures the connections that can be securely established over a large-scale network, in the presence of eavesdroppers. It is based on principles of information-theoretic security, widely accepted as the strictest notion of security. In this paper, we are interested in characterizing the global properties of the iS-graph in terms of percolation on the infinite plane. We prove the existence of a phase transition in the Poisson iS-graph, whereby an unbounded component of securely connected nodes suddenly arises as we increase the density of legitimate nodes. Our work shows that long-range communication in a wireless network is still possible when a secrecy constraint is present.

Connected through hyperedge HE-1 (induced by source paper "tradeoff between delay and physical layer security in wireless networks"):
  with members:
    - "when mmwave communications meet network densification a scalable interference coordination perspective"
    - "secure transmission with large numbers of antennas and finite alphabet inputs"
    - "5g software defined vehicular networks"
    - "toward a tractable delay analysis in ultra dense networks"
    - "heterogeneous cellular networks with spatio temporal traffic delay analysis and scheduling"
    - "secure massive mimo transmission with an active eavesdropper"
    - "5g ultra dense cellular networks"
    - "performance laws of large heterogeneous cellular networks"

Connected through hyperedge HE-2 (induced by source paper "boundaries as an enhancement technique for physical layer security"):
  with members:
    - "temporal correlation of interference and outage in mobile networks over one dimensional finite regions"
    - "stochastic geometry based comparison of secrecy enhancement techniques in d2d networks"
    - "temporal correlation of interference in bounded mobile ad hoc networks with blockage"
    - "distribution of cell size in bounded voronoi tesselations with application to secure local connectivity"
    - "device to device millimeter wave communications interference coverage rate and finite topologies"
    - "physical layer security in heterogeneous cellular networks"
    - "physical layer security in three tier wireless sensor networks a stochastic geometry approach"
    - "analyzing the impact of access point density on the performance of finite area networks"

Connected through hyperedge HE-3 (induced by source paper "boundaries can enhance physical layer security at high data rates"):
  with members:
    - "temporal correlation of interference and outage in mobile networks over one dimensional finite regions"
    - "physical layer security in wireless ad hoc networks under a hybrid full half duplex receiver deployment strategy"
    - "stochastic geometry based comparison of secrecy enhancement techniques in d2d networks"
    - "temporal correlation of interference in bounded mobile ad hoc networks with blockage"
    - "physical layer security in heterogeneous cellular networks"
    - "physical layer security in three tier wireless sensor networks a stochastic geometry approach"
    - "improving physical layer security in wireless communications using diversity techniques"
    - "analyzing the impact of access point density on the performance of finite area networks"

Connected through hyperedge HE-4 (induced by source paper "when does relay transmission give a more secure connection in wireless ad hoc networks"):
  with members:
    - "relay placement for physical layer security a secure connection perspective"
    - "joint relay and jammer selection for secure two way relay networks"
    - "the secrecy graph and some of its properties"

Connected through hyperedge HE-5 (induced by source paper "secrecy transmission capacity in noisy wireless ad hoc networks"):
  with members:
    - "transmission capacity of wireless networks"
    - "high sir transmission capacity of wireless networks with general fading and node distribution"
    - "interference alignment for secrecy"
    - "rethinking the secrecy outage formulation a secure transmission design perspective"
    - "on the throughput cost of physical layer security in decentralized wireless networks"
    - "an overview of the transmission capacity of wireless networks"
    - "the secrecy graph and some of its properties"
    - "the effect of fading channel inversion and threshold scheduling on ad hoc networks"

Connected through hyperedge HE-6 (induced by source paper "physical layer security in cellular networks a stochastic geometry approach"):
  with members:
    - "modeling and analysis of k tier downlink heterogeneous cellular networks"
    - "downlink capacity and base station density in cellular networks"
    - "on the throughput cost of physical layer security in decentralized wireless networks"
    - "a tractable approach to coverage and rate in cellular networks"
    - "the secrecy graph and some of its properties"
    - "a geometric interpretation of fading in wireless networks theory and applications"

Connected through hyperedge HE-7 (induced by source paper "wireless secrecy in large scale networks"):
  with members:
    - "secure communication in stochastic wireless networks"
    - "techniques for enhanced physical layer security"
    - "on the relationship between the multi antenna secrecy communications and cognitive radio communications"
    - "on secrecy capacity scaling in wireless networks"
    - "secrecy in cooperative relay broadcast channels"
    - "the secrecy graph and some of its properties"
    - "secure communication over fading channels"
    - "secure nested codes for type ii wiretap channels"

Connected through hyperedge HE-8 (induced by source paper "on the throughput cost of physical layer security in decentralized wireless networks"):
  with members:
    - "interference assisted secret communication"
    - "strong secrecy on the binary erasure wiretap channel using large girth ldpc codes"
    - "an overview of the transmission capacity of wireless networks"
    - "secure communication in stochastic wireless networks"
    - "secure transmission with multiple antennas ii the mimome wiretap channel"
    - "on secrecy capacity scaling in wireless networks"
    - "on the throughput of secure hybrid arq protocols for gaussian block fading channels"
    - "secrecy in cooperative relay broadcast channels"

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)