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: "secure degrees of freedom of mimo x channels with output feedback and delayed csit"
  Abstract: We investigate the problem of secure transmission over a two-user multi-input multi-output (MIMO) X-channel in which channel state information is provided with one-unit delay to both transmitters (CSIT), and each receiver feeds back its channel output to a different transmitter. We refer to this model as MIMO X-channel with asymmetric output feedback and delayed CSIT. The transmitters are equipped with M antennas each, and the receivers are equipped with N antennas each. For this model, accounting for both messages at each receiver, we characterize the optimal sum secure degrees of freedom (SDoF) region. We show that, in the presence of asymmetric output feedback and delayed CSIT, the sum SDoF region of the MIMO X-channel is the same as the SDoF region of a two-user MIMO BC with 2M antennas at the transmitter, N antennas at each receiver, and delayed CSIT. This result shows that, upon availability of asymmetric output feedback and delayed CSIT, there is no performance loss in terms of sum SDoF due to the distributed nature of the transmitters. Next, we show that this result also holds if only output feedback is conveyed to the transmitters, but in a symmetric manner, i.e., each receiver feeds back its output to both transmitters and no CSIT. We also study the case in which only asymmetric output feedback is provided to the transmitters, i.e., without CSIT, and derive a lower bound on the sum SDoF for this model. Furthermore, we specialize our results to the case in which there are no security constraints. In particular, similar to the setting with security constraints, we show that the optimal sum DoF region of the (M,M,N,N)-MIMO X-channel with asymmetric output feedback and delayed CSIT is the same as the DoF region of a two-user MIMO BC with 2M antennas at the transmitter, N antennas at each receiver, and delayed CSIT. We illustrate our results with some numerical examples.

Connected through hyperedge HE-1 (induced by source paper "achievable dof regions of three user mimo broadcast channel with delayed csit"):
  with members:
    - "on sdof of multi receiver wiretap channel with alternating csit"
    - "on the degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-2 (induced by source paper "on off switched interference alignment for diversity multiplexing tradeoff improvement in the 2 user x network with two antennas"):
  with members:
    - "advanced coordinated beamforming for the downlink of future lte cellular networks"
    - "interference aligned space time transmission with diversity for the 2 times 2 x network"
    - "interference alignment with diversity for the 2 times 2 x network with four antennas"
    - "maximum rate transmission with improved diversity gain for interference networks"
    - "simultaneous nonunique decoding is rate optimal"
    - "interference alignment and the degrees of freedom for the k user interference channel"

Connected through hyperedge HE-3 (induced by source paper "secure lossy source coding for some classes of helper and gray wyner models"):
  with members:
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "on secure source coding with side information at the encoder"
    - "secure source coding with a public helper"
    - "bounds on the capacity of the relay channel with noncausal state at source"
    - "secure lossless compression with side information"
    - "on the secure degrees of freedom of wireless x networks"
    - "the secrecy capacity of the mimo wiretap channel"
    - "the gaussian multiple access wire tap channel"

Connected through hyperedge HE-4 (induced by source paper "secure degrees of freedom region of the two user miso broadcast channel with alternating csit"):
  with members:
    - "secure degrees of freedom of wireless x networks using artificial noise alignment"
    - "aligned image sets under channel uncertainty settling a conjecture by lapidoth shamai and wigger on the collapse of degrees of freedom under finite precision csit"
    - "on the degrees of freedom of the 3 user miso broadcast channel with hybrid csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "dof analysis of the k user miso broadcast channel with alternating csit"
    - "on the dof region of the k user miso broadcast channel with hybrid csit"
    - "linear degrees of freedom of the mimo x channel with delayed csit"
    - "on x channels with feedback and delayed csi"

Connected through hyperedge HE-5 (induced by source paper "secure degrees of freedom of wireless x networks using artificial noise alignment"):
  with members:
    - "secure degrees of freedom of one hop wireless networks"
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "secure degrees of freedom of k user gaussian interference channels a unified view"
    - "on x channels with feedback and delayed csi"
    - "secure communication over parallel relay channel"
    - "on achievable degrees of freedom for mimo x channels"
    - "interference alignment for secrecy"
    - "interference assisted secret communication"

Connected through hyperedge HE-6 (induced by source paper "on sdof of multi receiver wiretap channel with alternating csit"):
  with members:
    - "on miso broadcast channel with alternating csit and secrecy constraints"
    - "secure degrees of freedom region of the two user miso broadcast channel with alternating csit"
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "secure communication over parallel relay channel"
    - "interference alignment for the mimo interference channel with delayed local csit"

Connected through hyperedge HE-7 (induced by source paper "interplay between delayed csit and network topology for secure miso bc"):
  with members:
    - "topological interference management through index coding"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "secure communication over parallel relay channel"
    - "interference alignment for secrecy"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "completely stale transmitter channel state information is still very useful"
    - "on secure transmission over parallel relay eavesdropper channel"

Connected through hyperedge HE-8 (induced by source paper "on miso broadcast channel with alternating csit and secrecy constraints"):
  with members:
    - "multiaccess channel with partially cooperating encoders and security constraints"
    - "new results on multiple input multiple output broadcast channels with confidential messages"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "secure communication over parallel relay channel"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "secrecy degrees of freedom of mimo broadcast channels with delayed csit"
    - "completely stale transmitter channel state information is still very useful"

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)