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: "strongly secure communications over the two way wiretap channel"
  Abstract: We consider the problem of secure communications over the two-way wiretap channel under a strong secrecy criterion. We improve existing results by developing an achievable region based on strategies that exploit both the interference at the eavesdropper's terminal and cooperation between legitimate users. We leverage the notion of channel resolvability for the multiple-access channel to analyze cooperative jamming and we show that the artificial noise created by cooperative jamming induces a source of common randomness that can be used for secret-key agreement. We illustrate the gain provided by this coding technique in the case of the Gaussian two-way wiretap channel, and we show significant improvements for some channel configurations.

Connected through hyperedge HE-1 (induced by source paper "secrecy rates for a channel with two senders and two receivers"):
  with members:
    - "energy efficient multicell multigroup multicasting with joint beamforming and antenna selection"
    - "secure multi source multicast"
    - "fourier motzkin elimination software for information theoretic inequalities"
    - "semantic security capacity for wiretap channels of type ii"
    - "secrecy capacity region of some classes of wiretap broadcast channels"
    - "strong secrecy for multiple access channels"
    - "distributed channel synthesis"
    - "achievability proof via output statistics of random binning"

Connected through hyperedge HE-2 (induced by source paper "physical layer security protocol for poisson channels for passive man in the middle attack"):
  with members:
    - "two way physical layer security protocol for gaussian channels"
    - "physical layer security for rf satellite channels in the finite length regime"
    - "signal detection under short interval sampling of continuous waveforms for optical wireless scattering communication"
    - "quantum inspired secure wireless communication protocol under spatial and local gaussian noise assumptions"
    - "secure wireless communication under spatial and local gaussian noise assumptions"
    - "numerical study on secrecy capacity and code length dependence of the performances in optical wiretap channels"
    - "5g wireless backhaul networks challenges and research advances"
    - "exponential decreasing rate of leaked information in universal random privacy amplification"

Connected through hyperedge HE-3 (induced by source paper "robust energy efficient beamforming in misome swipt systems with proportional secrecy rate"):
  with members:
    - "robust secrecy energy efficient beamforming in misome swipt systems with proportional fairness"
    - "rf based energy harvesting in decode and forward relaying systems ergodic and outage capacities"
    - "secure beamforming in full duplex swipt systems with loopback self interference cancellation"
    - "large scale multiantenna multisine wireless power transfer"
    - "dynamic cross layer beamforming in hybrid powered communication systems with harvest use trade strategy"
    - "joint optimization of power and data transfer in multiuser mimo systems"
    - "robust resource allocation for mimo wireless powered communication networks based on a non linear eh model"
    - "network densification in 5g from the short range communications perspective"

Connected through hyperedge HE-4 (induced by source paper "learning an adversary s actions for secret communication"):
  with members:
    - "first and second order asymptotics in covert communication"
    - "generalizing multiple access wiretap and wiretap ii channel models achievable rates and cost of strong secrecy"
    - "a new wiretap channel model and its strong secrecy capacity"
    - "arbitrarily varying wiretap channels with type constrained states"
    - "semantic security capacity for wiretap channels of type ii"
    - "list decoding random coding exponents and expurgated exponents"
    - "capacity results for arbitrarily varying wiretap channels"
    - "regret analysis of stochastic and nonstochastic multi armed bandit problems"

Connected through hyperedge HE-5 (induced by source paper "secure beamforming in full duplex swipt systems with loopback self interference cancellation"):
  with members:
    - "probabilistically robust swipt for secrecy misome systems"
    - "secure beamforming in full duplex swipt systems"
    - "transceiver design to maximize the weighted sum secrecy rate in full duplex swipt systems"
    - "multi objective optimization for robust power efficient and secure full duplex wireless communication systems"
    - "robust beamforming for secure communication in systems with wireless information and power transfer"
    - "secure and green swipt in distributed antenna networks with limited backhaul capacity"
    - "secure beamforming for mimo broadcasting with wireless information and power transfer"
    - "secrecy wireless information and power transfer with miso beamforming"

Connected through hyperedge HE-6 (induced by source paper "achieving both positive secrecy rates of the users in two way wiretap channel by individual secrecy"):
  with members:
    - "multiple access relay wiretap channel"
    - "weakly secure regenerating codes for distributed storage"
    - "the role of feedback in two way secure communications"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"

Connected through hyperedge HE-7 (induced by source paper "effects of feedback on the one sided secrecy of two way wiretap through multiple transmissions"):
  with members:
    - "the role of feedback in two way secure communications"
    - "the wiretap channel with feedback encryption over the channel"
    - "secret communication with feedback"

Connected through hyperedge HE-8 (induced by source paper "secure polar coding for the two way wiretap channel"):
  with members:
    - "achieving the uniform rate region of general multiple access channels by polar coding"
    - "polar codes for broadcast channels"
    - "polar coding for secure transmission in miso fading wiretap channels"
    - "achieving secrecy capacity of the wiretap channel and broadcast channel with a confidential component"
    - "polar coding for the broadcast channel with confidential messages a random binning analogy"
    - "channel upgradation for non binary input alphabets and macs"
    - "polar coding for secret key generation"
    - "polar codes for arbitrary dmcs and arbitrary macs"

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)