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 edge caching with secrecy constraints"
  Abstract: In this paper we investigate the problem of optimal cache placement under secrecy constraints in heterogeneous networks, where small-cell base stations are equipped with caches to reduce the overall backhaul load. For two models for eavesdropping attacks, we formally derive the necessary conditions for secrecy and we derive the corresponding achievable backhaul rate. In particular we formulate the optimal caching schemes with secrecy constraints as a convex optimization problem. We then thoroughly investigate the backhaul rate performance of the heterogeneous network with secrecy constraints using numerical simulations. We compare the system performance with and without secrecy constraints and we analyze the influence of the system parameters, such as the file popularity, size of the library files and the capabilities of the small-cell base stations, on the overall performance of our optimal caching strategy. Our results highlight the considerable impact of the secrecy requirements on the overall caching performance of the network.

Connected through hyperedge HE-1 (induced by source paper "decentralized caching schemes and performance limits in two layer networks"):
  with members:
    - "riding on the primary a new spectrum sharing paradigm for wireless powered iot devices"
    - "low subpacketization schemes for coded caching"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "decentralized coded caching with distinct cache capacities"
    - "improved approximation of storage rate tradeoff for caching with multiple demands"
    - "fundamental limits of secretive coded caching"
    - "caching aided coded multicasting with multiple random requests"
    - "order optimal rate of caching and coded multicasting with random demands"

Connected through hyperedge HE-2 (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"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "physical layer security in heterogeneous cellular networks"

Connected through hyperedge HE-3 (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"
    - "a survey on wireless security technical challenges recent advances and future trends"
    - "physical layer security in heterogeneous cellular networks"
    - "cooperative caching and transmission design in cluster centric small cell networks"

Connected through hyperedge HE-4 (induced by source paper "secrecy capacity memory tradeoff of erasure broadcast channels"):
  with members:
    - "secure broadcasting using independent secret keys"
    - "benefits of cache assignment on degraded broadcast channels"
    - "cache aided content delivery over erasure broadcast channels"
    - "cache enabled physical layer security for video streaming in backhaul limited cellular networks"
    - "a secure approach for caching contents in wireless ad hoc networks"
    - "noisy broadcast networks with receiver caching"
    - "speeding up future video distribution via channel aware caching aided coded multicast"
    - "fundamental limits of secretive coded caching"

Connected through hyperedge HE-5 (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"
    - "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"
    - "fundamental limits of caching"

Connected through hyperedge HE-6 (induced by source paper "secure video streaming in heterogeneous small cell networks with untrusted cache helpers"):
  with members:
    - "on the optimality of separation between caching and delivery in general cache networks"
    - "cache enabled physical layer security for video streaming in backhaul limited cellular networks"
    - "wireless caching technical misconceptions and business barriers"
    - "caching in the sky proactive deployment of cache enabled unmanned aerial vehicles for optimized quality of experience"
    - "energy efficiency of downlink networks with caching at base stations"
    - "cross layer optimization of fast video delivery in cache enabled relaying networks"
    - "5g ultra dense cellular networks"
    - "5g wireless backhaul networks challenges and research advances"

Connected through hyperedge HE-7 (induced by source paper "cache enabled physical layer security for video streaming in backhaul limited cellular networks"):
  with members:
    - "wireless caching technical misconceptions and business barriers"
    - "fog computing based radio access networks issues and challenges"
    - "cache enabled physical layer security for video streaming in wireless networks with limited backhaul"
    - "cooperative caching and transmission design in cluster centric small cell networks"
    - "content centric sparse multicast beamforming for cache enabled cloud ran"
    - "fundamental limits of caching with secure delivery"
    - "joint optimization of radio and computational resources for multicell mobile edge computing"
    - "learning based optimization of cache content in a small cell base station"

Connected through hyperedge HE-8 (induced by source paper "decentralized caching in two layer networks algorithms and limits"):
  with members:
    - "low subpacketization schemes for coded caching"
    - "modeling analysis and optimization of coded caching in small cell networks"
    - "decentralized coded caching with distinct cache capacities"
    - "improved approximation of storage rate tradeoff for caching with multiple demands"
    - "fundamental limits of secretive coded caching"
    - "caching aided coded multicasting with multiple random requests"
    - "order optimal rate of caching and coded multicasting with random demands"
    - "finite length analysis of caching aided coded multicasting"

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)