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 degrees of freedom of mimo interference channels without state information at transmitters"
  Abstract: This paper fully determines the degree-of-freedom (DoF) region of two-user interference channels with arbitrary number of transmit and receive antennas and isotropic fading, where the channel state information is available to the receivers but not to the transmitters. The result characterizes the capacity region to the first order of the logarithm of the signal-to-noise ratio (SNR) in the high-SNR regime. The DoF region is achieved using random Gaussian codebooks independent of the channel states. Hence the DoF gain due to beamforming and interference alignment is completely lost in absence of channel state information at the transmitters (CSIT).

Connected through hyperedge HE-1 (induced by source paper "k user symmetric m times n mimo interference channel under finite precision csit a gdof perspective"):
  with members:
    - "sum set inequalities from aligned image sets instruments for robust gdof bounds"
    - "aligned image sets and the generalized degrees of freedom of symmetric mimo interference channel with partial csit"
    - "gdof of the k user symmetric miso bc bridging the gap between finite precision and perfect csit"
    - "gdof of the miso bc bridging the gap between finite precision and perfect csit"
    - "generalized degrees of freedom of the symmetric k user interference channel under finite precision csit"
    - "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit"
    - "generalized degrees of freedom of the symmetric gaussian k user interference channel"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-2 (induced by source paper "on the degrees of freedom of k user siso interference and x channels with delayed csit"):
  with members:
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "completely stale transmitter channel state information is still very useful"
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"
    - "on degrees of freedom region of mimo networks without csit"
    - "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit"

Connected through hyperedge HE-3 (induced by source paper "the dof region of the multiple antenna time correlated interference channel with delayed csit"):
  with members:
    - "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"
    - "on the degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "completely stale transmitter channel state information is still very useful"
    - "interference alignment under limited feedback for mimo interference channels"
    - "on degrees of freedom region of mimo networks without csit"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"
    - "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit"

Connected through hyperedge HE-4 (induced by source paper "the degrees of freedom of mimo networks with full duplex receiver cooperation but no csit"):
  with members:
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "the degrees of freedom region of the mimo interference channel with shannon feedback"
    - "the degrees of freedom of the 2 hop 2 user interference channel with feedback"
    - "interference channels with destination cooperation"
    - "degrees of freedom regions of two user mimo z and full interference channels the benefit of reconfigurable antennas"
    - "the degrees of freedom region of the mimo cognitive interference channel with no csit"
    - "degrees of freedom of the mimo interference channel with cooperation and cognition"

Connected through hyperedge HE-5 (induced by source paper "degrees of freedom region for an interference network with general message demands"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "degrees of freedom regions of two user mimo z and full interference channels the benefit of reconfigurable antennas"
    - "interference alignment for the k user mimo interference channel"
    - "the approximate capacity of the many to one and one to many gaussian interference channels"
    - "aiming perfectly in the dark blind interference alignment through staggered antenna switching"
    - "capacity regions and sum rate capacities of vector gaussian interference channels"
    - "on feasibility of interference alignment in mimo interference networks"
    - "on the degrees of freedom regions of two user mimo z and full interference channels with reconfigurable antennas"

Connected through hyperedge HE-6 (induced by source paper "wireless network coding with local network views coded layer scheduling"):
  with members:
    - "sum capacity of interference channels with a local view impact of distributed decisions"
    - "wireless network information flow a deterministic approach"
    - "on achieving local view capacity via maximal independent graph scheduling"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "exploiting channel correlations simple interference alignment schemes with no csit"
    - "on the capacity of multi hop wireless networks with partial network knowledge"

Connected through hyperedge HE-7 (induced by source paper "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"):
  with members:
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "exploiting channel correlations simple interference alignment schemes with no csit"
    - "the degrees of freedom region of the mimo cognitive interference channel with no csit"
    - "interference alignment under limited feedback for mimo interference channels"
    - "isotropic mimo interference channels without csit the loss of degrees of freedom"
    - "on degrees of freedom region of mimo networks without csit"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"

Connected through hyperedge HE-8 (induced by source paper "the degrees of freedom region of the mimo interference channel with shannon feedback"):
  with members:
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "ergodic fading interference channels sum capacity and separability"
    - "the degrees of freedom of the 2 hop 2 user interference channel with feedback"
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "the degrees of freedom region of the mimo cognitive interference channel with no csit"
    - "on degrees of freedom region of mimo networks without csit"

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)