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 the throughput cost of physical layer security in decentralized wireless networks"
  Abstract: This paper studies the throughput of large-scale decentralized wireless networks with physical layer security constraints. In particular, we are interested in the question of how much throughput needs to be sacrificed for achieving a certain level of security. We consider random networks where the legitimate nodes and the eavesdroppers are distributed according to independent two-dimensional Poisson point processes. The transmission capacity framework is used to characterize the area spectral efficiency of secure transmissions with constraints on both the quality of service (QoS) and the level of security. This framework illustrates the dependence of the network throughput on key system parameters, such as the densities of legitimate nodes and eavesdroppers, as well as the QoS and security constraints. One important finding is that the throughput cost of achieving a moderate level of security is quite low, while throughput must be significantly sacrificed to realize a highly secure network. We also study the use of a secrecy guard zone, which is shown to give a significant improvement on the throughput of networks with high security requirements.

Connected through hyperedge HE-1 (induced by source paper "secrecy transmission in large scale uav enabled wireless networks"):
  with members:
    - "a survey of optimization approaches for wireless physical layer security"
    - "exploiting noma oma for multi uav communications in large scale networks"
    - "exploiting noma for uav communications in large scale cellular networks"
    - "capacity characterization of uav enabled two user broadcast channel"
    - "securing uav communications via joint trajectory and power control"
    - "cellular enabled uav communication a connectivity constrained trajectory optimization perspective"
    - "ultra reliable uav communication using altitude and cooperation diversity"
    - "physical layer security in cache enabled cooperative small cell networks against randomly distributed eavesdroppers"

Connected through hyperedge HE-2 (induced by source paper "secure communication in dynamic wireless ad hoc networks"):
  with members:
    - "k connectivity in random key graphs with unreliable links"
    - "tradeoff between delay and physical layer security in wireless networks"
    - "directional cell search delay analysis for cellular networks with static users"
    - "toward a tractable delay analysis in ultra dense networks"
    - "connectivity in secure wireless sensor networks under transmission constraints"
    - "on topological properties of wireless sensor networks under the q composite key predistribution scheme with on off channels"
    - "physical layer security in cellular networks a stochastic geometry approach"
    - "information propagation speed in mobile and delay tolerant networks"

Connected through hyperedge HE-3 (induced by source paper "secure and energy efficient transmissions in cache enabled heterogeneous cellular networks performance analysis and optimization"):
  with members:
    - "generalization of lru cache replacement policy with applications to video streaming"
    - "cache enabled physical layer security for video streaming in backhaul limited cellular networks"
    - "safeguarding decentralized wireless networks using full duplex jamming receivers"
    - "secure video streaming in heterogeneous small cell networks with untrusted cache helpers"
    - "sprout a functional caching approach to minimize service latency in erasure coded storage"
    - "wireless caching technical misconceptions and business barriers"
    - "on edge caching with secrecy constraints"
    - "a survey on wireless security technical challenges recent advances and future trends"

Connected through hyperedge HE-4 (induced by source paper "physical layer security in cache enabled cooperative small cell networks against randomly distributed eavesdroppers"):
  with members:
    - "cache enabled physical layer security for video streaming in backhaul limited cellular networks"
    - "safeguarding decentralized wireless networks using full duplex jamming receivers"
    - "secure video streaming in heterogeneous small cell networks with untrusted cache helpers"
    - "wireless caching technical misconceptions and business barriers"
    - "artificial noise aided secure transmission in large scale spectrum sharing networks"
    - "on edge caching with secrecy constraints"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "physical layer security in heterogeneous cellular networks"

Connected through hyperedge HE-5 (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-6 (induced by source paper "secure routing with power optimization for ad hoc networks"):
  with members:
    - "physical layer security jamming theoretical limits and practical designs in wireless networks"
    - "secure transmission in linear multihop relaying networks"
    - "a primer on cellular network analysis using stochastic geometry"
    - "physical layer security in heterogeneous cellular networks"
    - "secure routing in multihop wireless ad hoc networks with decode and forward relaying"
    - "optimizing df cognitive radio networks with full duplex enabled energy access points"
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "achieving global optimality for weighted sum rate maximization in the k user gaussian interference channel with multiple antennas"

Connected through hyperedge HE-7 (induced by source paper "delivery secrecy tradeoff for cache enabled stochastic networks content placement optimization"):
  with members:
    - "cache enabled physical layer security for video streaming in backhaul limited cellular networks"
    - "on edge caching with secrecy constraints"
    - "caching placement in stochastic wireless caching helper networks channel selection diversity via caching"
    - "cache enabled heterogeneous cellular networks optimal tier level content placement"
    - "optimal geographic caching in cellular networks"
    - "fundamental limits of caching with secure delivery"
    - "analysis and optimization of caching and multicasting in large scale cache enabled wireless networks"
    - "living on the edge the role of proactive caching in 5g wireless networks"

Connected through hyperedge HE-8 (induced by source paper "on secure wireless communications for service oriented computing"):
  with members:
    - "principles of physical layer security in multiuser wireless networks a survey"
    - "on cooperative relaying schemes for wireless physical layer security"
    - "cooperative jamming for secure communications in mimo relay networks"
    - "the secrecy graph and some of its properties"
    - "a simple cooperative diversity method based on network path selection"

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)