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: "covert communication with channel state information at the transmitter"
  Abstract: We consider the problem of covert communication over a state-dependent channel, where the transmitter has causal or noncausal knowledge of the channel states. Here, "covert" means that a warden on the channel should observe similar statistics when the transmitter is sending a message and when it is not. When a sufficiently long secret key is shared between the transmitter and the receiver, we derive closed-form formulas for the maximum achievable covert communication rate ("covert capacity") for discrete memoryless channels and, when the transmitter's channel-state information (CSI) is noncausal, for additive white Gaussian noise (AWGN) channels. For certain channel models, including the AWGN channel, we show that the covert capacity is positive with CSI at the transmitter, but is zero without CSI. We also derive lower bounds on the rate of the secret key that is needed for the transmitter and the receiver to achieve the covert capacity.

Connected through hyperedge HE-1 (induced by source paper "keyless covert communication via channel state information"):
  with members:
    - "first and second order asymptotics in covert communication"
    - "stealthy secret key generation"
    - "wiretap channels with causal state information strong secrecy"
    - "fundamental limits of communication with low probability of detection"
    - "the likelihood encoder for lossy compression"
    - "wiretap channels with random states non causally available at the encoder"
    - "covert communication over noisy channels a resolvability perspective"
    - "strong secrecy for cooperative broadcast channels"

Connected through hyperedge HE-2 (induced by source paper "undetectable radios covert communication under spectral mask constraints"):
  with members:
    - "covert communication over a compound channel"
    - "first and second order asymptotics in covert communication"
    - "embedding covert information in broadcast communications"
    - "covert communication over adversarially jammed channels"
    - "covert communication over a k user multiple access channel"
    - "time division is optimal for covert communication over some broadcast channels"
    - "fundamental limits of communication with low probability of detection"
    - "covert communication over noisy channels a resolvability perspective"

Connected through hyperedge HE-3 (induced by source paper "treating interference as noise is optimal for covert communication over interference channels"):
  with members:
    - "throughput scaling of covert communication over wireless adhoc networks"
    - "covert communication over a k user multiple access channel"
    - "fundamental limits of covert communication over mimo awgn channel"
    - "time division is optimal for covert communication over some broadcast channels"
    - "fundamental limits of communication with low probability of detection"
    - "covert communication over noisy channels a resolvability perspective"
    - "limits of reliable communication with low probability of detection on awgn channels"

Connected through hyperedge HE-4 (induced by source paper "challenges in covert wireless communications with active warden on awgn channels"):
  with members:
    - "multi hop routing in covert wireless networks"
    - "covert communication over a k user multiple access channel"
    - "covert communication achieved by a greedy relay in wireless networks"
    - "covert wireless communication with a poisson field of interferers"
    - "covert wireless communication with artificial noise generation"
    - "the sound and the fury hiding communications in noisy wireless networks with interference uncertainty"
    - "on covert communication with noise uncertainty"
    - "fundamental limits of communication with low probability of detection"

Connected through hyperedge HE-5 (induced by source paper "covert secret key generation with an active warden"):
  with members:
    - "covert communication over adversarially jammed channels"
    - "stealthy secret key generation"
    - "covert communication in fading channels under channel uncertainty"
    - "fundamental limits of communication with low probability of detection"
    - "the likelihood encoder for lossy compression"
    - "covert communication in the presence of an uninformed jammer"
    - "covert communication over noisy channels a resolvability perspective"
    - "principles of physical layer security in multiuser wireless networks a survey"

Connected through hyperedge HE-6 (induced by source paper "throughput scaling of covert communication over wireless adhoc networks"):
  with members:
    - "covert capacity of non coherent rayleigh fading channels"
    - "fundamental limits of covert communication over mimo awgn channel"
    - "time division is optimal for covert communication over some broadcast channels"
    - "fundamental limits of communication with low probability of detection"
    - "covert communication over noisy channels a resolvability perspective"
    - "limits of reliable communication with low probability of detection on awgn channels"
    - "cognitive networks achieve throughput scaling of a homogeneous network"
    - "on capacity scaling in arbitrary wireless networks"

Connected through hyperedge HE-7 (induced by source paper "covert communication over a compound channel"):
  with members:
    - "first and second order asymptotics in covert communication"
    - "covert communication over adversarially jammed channels"
    - "time division is optimal for covert communication over some broadcast channels"
    - "fundamental limits of communication with low probability of detection"
    - "covert communication over noisy channels a resolvability perspective"
    - "optimal throughput for covert communication over a classical quantum channel"
    - "asymptotic estimates in information theory with non vanishing error probabilities"
    - "limits of reliable communication with low probability of detection on awgn channels"

Connected through hyperedge HE-8 (induced by source paper "covert communication over a k user multiple access channel"):
  with members:
    - "first and second order asymptotics in covert communication"
    - "embedding covert information in broadcast communications"
    - "cooperative resolvability and secrecy in the cribbing multiple access channel"
    - "multilevel coded pulse position modulation for covert communications over binary input discrete memoryless channels"
    - "covert communication achieved by a greedy relay in wireless networks"
    - "time division transmission is optimal for covert communication over broadcast channels"
    - "covert wireless communication with artificial noise generation"
    - "mac resolvability first and second order results"

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)