human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "feedback coding schemes for the broadcast channel with mutual secrecy requirement"):
  Abstract: Recently, the physical layer security (PLS) of the communication systems has been shown to be enhanced by using legal receiver's feedback. The present secret key based feedback scheme mainly focuses on producing key from the feedback and using this key to protect part of the transmitted message. However, this feedback scheme has been proved only optimal for several degraded cases. The broadcast channel with mutual secrecy requirement (BC-MSR) is important as it constitutes the essence of physical layer security (PLS) in the down-link of the wireless communication systems. In this paper, we investigate the feedback effects on the BC-MSR, and propose two inner bounds and one outer bound on the secrecy capacity region of the BC-MSR with noiseless feedback. One inner bound is constructed according to the already existing secret key based feedback coding scheme for the wiretap channel, and the other is constructed by a hybrid coding scheme using feedback to generate not only keys protecting the transmitted messages but also cooperative messages helping the receivers to improve their decoding performance. The performance of the proposed feedback schemes and the gap between the inner and outer bounds are further explained via two examples.

Includes members:
  Member "secure broadcasting using independent secret keys":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "secrecy capacity memory tradeoff of erasure broadcast channels")
  Member "finite state markov wiretap channel with delayed feedback":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "secure polar coding with delayed wiretapping information")
  Member "multiple access relay wiretap channel":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "achieving both positive secrecy rates of the users in two way wiretap channel by individual secrecy")
  Member "wiretap channel with causal state information and secure rate limited feedback":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "secure adaptive group testing")
  Member "discrete memoryless interference and broadcast channels with confidential messages secrecy rate regions":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "cognitive radio networks an information theoretic perspective")
  Member "secrecy capacity of a class of broadcast channels with an eavesdropper":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "wiretap and gelfand pinsker channels analogy and its applications")
  Member "the secrecy rate region of the broadcast channel":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "degraded broadcast channel secrecy outside of a bounded range")
  Member "source coding for a simple network with receiver side information":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "rate distortion region of a gray wyner model with side information")

Question: Please tell me which class the source paper 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)