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 wiretap channel with feedback encryption over the channel"
  Abstract: In this work, the critical role of noisy feedback in enhancing the secrecy capacity of the wiretap channel is established. Unlike previous works, where a noiseless public discussion channel is used for feedback, the feed-forward and feedback signals share the same noisy channel in the present model. Quite interestingly, this noisy feedback model is shown to be more advantageous in the current setting. More specifically, the discrete memoryless modulo-additive channel with a full-duplex destination node is considered first, and it is shown that the judicious use of feedback increases the secrecy capacity to the capacity of the source-destination channel in the absence of the wiretapper. In the achievability scheme, the feedback signal corresponds to a private key, known only to the destination. In the half-duplex scheme, a novel feedback technique that always achieves a positive perfect secrecy rate (even when the source-wiretapper channel is less noisy than the source-destination channel) is proposed. These results hinge on the modulo-additive property of the channel, which is exploited by the destination to perform encryption over the channel without revealing its key to the source. Finally, this scheme is extended to the continuous real valued modulo-Lambda channel where it is shown that the secrecy capacity with feedback is also equal to the capacity in the absence of the wiretapper.

Connected through hyperedge HE-1 (induced by source paper "a survey of physical layer security techniques for 5g wireless networks and challenges ahead"):
  with members:
    - "secure massive mimo systems with limited rf chains"
    - "secure transmission with large numbers of antennas and finite alphabet inputs"
    - "probabilistically robust swipt for secrecy misome systems"
    - "exploiting full duplex receivers for achieving secret communications in multiuser miso networks"
    - "full duplex bidirectional secure communications under perfect and distributionally ambiguous eavesdropper s csi"
    - "safeguarding decentralized wireless networks using full duplex jamming receivers"
    - "physical layer security aware routing and performance tradeoffs in ad hoc networks"
    - "hybrid procoder and combiner design for secure transmission in mmwave mimo systems"

Connected through hyperedge HE-2 (induced by source paper "secrecy capacity of colored gaussian noise channels with feedback"):
  with members:
    - "multiple access wiretap channel with noiseless feedback"
    - "an improved feedback coding scheme for the wire tap channel"
    - "control approach to computing the feedback capacity for stationary finite dimensional gaussian channels"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "secret communication with feedback"
    - "secrecy capacity of the wiretap channel with noisy feedback"
    - "feedback capacity of stationary gaussian channels"

Connected through hyperedge HE-3 (induced by source paper "a simplified coding scheme for the broadcast channel with complementary receiver side information under individual secrecy constraints"):
  with members:
    - "individual secrecy for broadcast channels with receiver side information"
    - "individual secrecy for the broadcast channel"
    - "brute force searching the typical set and guesswork"
    - "secret key generation using correlated sources and channels"
    - "secrecy via sources and channels"
    - "secret communication with feedback"

Connected through hyperedge HE-4 (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 role of feedback in two way secure communications"
    - "secret communication with feedback"

Connected through hyperedge HE-5 (induced by source paper "individual secrecy for broadcast channels with receiver side information"):
  with members:
    - "secure multiplex coding with dependent and non uniform multiple messages"
    - "strong secrecy for cooperative broadcast channels"
    - "individual secrecy for the broadcast channel"
    - "secrecy capacity region of some classes of wiretap broadcast channels"
    - "capacity regions for broadcast channels with degraded message sets and message cognition under different secrecy constraints"
    - "on block security of regenerating codes at the mbr point for distributed storage systems"
    - "effective secrecy reliability confusion and stealth"
    - "new results on multiple input multiple output broadcast channels with confidential messages"

Connected through hyperedge HE-6 (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 role of feedback in two way secure communications"
    - "secret communication with feedback"
    - "multiple access channels with generalized feedback and confidential messages"

Connected through hyperedge HE-7 (induced by source paper "mitigating rate loss in fading multiple access wiretap channel to achieve shannon capacity region"):
  with members:
    - "achieving shannon capacity in a fading wiretap channel"
    - "achieving shannon capacity region as secrecy rate region in a multiple access wiretap channel"
    - "strong secrecy for multiple access channels"
    - "previous messages provide the key to achieve shannon capacity in a wiretap channel"
    - "achievable secrecy sum rate in a fading mac wt with power control and without csi of eavesdropper"
    - "strong secrecy from channel resolvability"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-8 (induced by source paper "enhancing secrecy rates in a wiretap channel"):
  with members:
    - "opportunistic secrecy with a strict delay constraint"
    - "previous messages provide the key to achieve shannon capacity in a wiretap channel"
    - "secrecy via sources and channels"
    - "strong secrecy from channel resolvability"

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)