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 "secure retrospective interference alignment"):
  Abstract: In this paper, the K-user interference channel with secrecy constraints is considered with delayed channel state information at transmitters (CSIT). We propose a novel secure retrospective interference alignment scheme in which the transmitters carefully mix information symbols with artificial noises to ensure confidentiality. Achieving positive secure degrees of freedom (SDoF) is challenging due to the delayed nature of CSIT, and the distributed nature of the transmitters. Our scheme works over two phases: Phase one, in which each transmitter sends information symbols mixed with artificial noises, and repeats such transmission over multiple rounds. In the next phase, each transmitter uses the delayed CSIT of the previous phase and sends a function of the net interference and artificial noises (generated in previous phase), which is simultaneously useful for all receivers. These phases are designed to ensure the decodability of the desired messages while satisfying the secrecy constraints. We present our achievable scheme for three models, namely: (1) K-user interference channel with confidential messages (IC-CM), and we show that      1 2   (  K  − 6 )      SDoF is achievable; (2) K-user interference channel with an external eavesdropper (IC-EE); and (3) K-user IC with confidential messages and an external eavesdropper (IC-CM-EE). We show that for the K-user IC-EE,      1 2   (  K  − 3 )      SDoF is achievable, and for the K-user IC-CM-EE,      1 2   (  K  − 6 )      is achievable. To the best of our knowledge, this is the first result on the K-user interference channel with secrecy constrained models and delayed CSIT that achieves an SDoF which scales with     K    , square-root of number of users.

Includes members:
  Member "secrecy in mimo networks with no eavesdropper csit":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "on the secure degrees of freedom of the k user interference channel with delayed csit")
  Member "secure degrees of freedom region of the two user miso broadcast channel with alternating csit":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "throughput region of spatially correlated interference packet networks")
  Member "secure degrees of freedom of one hop wireless networks":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "towards an algebraic network information theory simultaneous joint typicality decoding")
  Member "ergodic interference alignment with delayed feedback":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "on the secure degrees of freedom of the k user interference channel with delayed csit")
  Member "on the degrees of freedom of k user siso interference and x channels with delayed csit":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "capacity results for intermittent x channels with delayed channel state feedback")
  Member "secure degrees of freedom of k user gaussian interference channels a unified view":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "adding common randomness can remove the secrecy constraints in communication networks")
  Member "interference alignment for secrecy":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "adding common randomness can remove the secrecy constraints in communication networks")
  Member "completely stale transmitter channel state information is still very useful":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "achievable dof regions of three user mimo broadcast channel with delayed csit")

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)