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: "the role of feedback in two way secure communications"
  Abstract: Most practical communication links are bi-directional. In these models, since the source node also receives signals, its encoder has the option of computing its output based on the signals it received in the past. On the other hand, from a practical point of view, it would also be desirable to identify the cases where such an encoder design may not improve communication rates. This question is particularly interesting for the case where the transmitted messages and the feedback signals are subject to eavesdropping. In this work, we investigate the question of how much impact the feedback has on the secrecy capacity by studying two fundamental models. First, we consider the Gaussian two-way wiretap channel and derive an outer bound for its secrecy capacity region. We show that the secrecy rate loss can be unbounded when feedback signals are not utilized except for a special case we identify, and thus conclude that utilizing feedback can be highly beneficial in general. Second, we consider a half-duplex Gaussian two-way relay channel where the relay node is also an eavesdropper, and find that the impact of feedback is less pronounced compared to the previous scenario. Specifically, the loss in secrecy rate, when ignoring the feedback, is quantified to be less than 0.5 bit per channel use when the relay power goes to infinity. This achievable rate region is obtained with simple time sharing along with cooperative jamming, which, with its simplicity and near optimum performance, is a viable alternative to an encoder that utilizes feedback signals.

Connected through hyperedge HE-1 (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-2 (induced by source paper "generalizing multiple access wiretap and wiretap ii channel models achievable rates and cost of strong secrecy"):
  with members:
    - "a new wiretap channel model and its strong secrecy capacity"
    - "semantic security capacity for wiretap channels of type ii"
    - "causal erasure channels"
    - "achievability proof via output statistics of random binning"
    - "information theoretically secure regenerating codes for distributed storage"
    - "the gaussian many to one interference channel with confidential messages"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"
    - "secure nested codes for type ii wiretap channels"

Connected through hyperedge HE-3 (induced by source paper "a new wiretap channel model and its strong secrecy capacity"):
  with members:
    - "semantic security capacity for wiretap channels of type ii"
    - "distributed channel synthesis"
    - "achievability proof via output statistics of random binning"
    - "the gaussian many to one interference channel with confidential messages"
    - "capacity region of gaussian mimo broadcast channels with common and confidential messages"
    - "secure nested codes for type ii wiretap channels"
    - "the gaussian multiple access wire tap channel"
    - "applications of ldpc codes to the wiretap channel"

Connected through hyperedge HE-4 (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"
    - "strongly secure communications over the two way wiretap channel"
    - "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions"

Connected through hyperedge HE-5 (induced by source paper "effects of feedback on the one sided secrecy of two way wiretap through multiple transmissions"):
  with members:
    - "strongly secure communications over the two way wiretap channel"
    - "the wiretap channel with feedback encryption over the channel"
    - "secret communication with feedback"

Connected through hyperedge HE-6 (induced by source paper "secure degrees of freedom of multi user networks one time pads in the air via alignment"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "secure degrees of freedom of the gaussian wiretap channel with helpers and no eavesdropper csi blind cooperative jamming"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "interference alignment for secrecy"
    - "strongly secure communications over the two way wiretap channel"
    - "on the secure degrees of freedom of the multiple access channel"
    - "ergodic secret alignment"

Connected through hyperedge HE-7 (induced by source paper "the wiretap channel with generalized feedback secure communication and key generation"):
  with members:
    - "secret communication over broadcast erasure channels with state feedback"
    - "secret key generation using correlated sources and channels"
    - "on the achievable rate region of a new wiretap channel with side information"
    - "secrecy via sources and channels"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "the wiretap channel with feedback encryption over the channel"
    - "secret communication with feedback"
    - "multiple access channels with generalized feedback and confidential messages"

Connected through hyperedge HE-8 (induced by source paper "joint relay and jammer selection for secure two way relay networks"):
  with members:
    - "differential modulation for bi directional relaying with analog network coding"
    - "cooperative secret communication with artificial noise in symmetric interference channel"
    - "secrecy in cooperative relay broadcast channels"
    - "achievable rates for two way wire tap channels"
    - "achievable rates for the general gaussian multiple access wire tap channel with collective secrecy"
    - "the relay eavesdropper channel cooperation for secrecy"

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)