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 "on the secrecy degrees of freedom of multi antenna wiretap channels with delayed csit"):
  Abstract: The secrecy degrees of freedom (SDoF) of the Gaussian multiple-input and single-output (MISO) wiretap channel is studied under the assumption that delayed channel state information (CSI) is available at the transmitter and each receiver knows its own instantaneous channel. We first show that a strictly positive SDoF can be guaranteed whenever the transmitter has delayed CSI (either on the legitimate channel or/and the eavesdropper channel). In particular, in the case with delayed CSI on both channels, it is shown that the optimal SDoF is 2/3. We then generalize the result to the two-user Gaussian MISO broadcast channel with confidential messages and characterize the SDoF region when the transmitter has delayed CSI of both receivers. Interestingly, the artificial noise schemes exploiting several time instances are shown to provide the optimal SDoF region by masking the confidential message to the unintended receiver while aligning the interference at each receiver.

Includes members:
  Member "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "interference and x networks with noisy cooperation and feedback")
  Member "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "achievable dof regions of three user mimo broadcast channel with delayed csit")
  Member "retrospective interference alignment":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "throughput region of spatially correlated interference packet networks")
  Member "interference alignment for the multi antenna compound wiretap channel":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "mimo multiple access channel with an arbitrarily varying eavesdropper")
  Member "on the secrecy degress of freedom of the multi antenna block fading wiretap channels":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "secrecy degrees of freedom of mimo broadcast channels with delayed csit")
  Member "on the compound mimo broadcast channels with confidential messages":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "the secrecy capacity of compound gaussian mimo wiretap channels")

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)