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 region of the mimo interference channel with shannon feedback"
  Abstract: The two-user multiple-input multiple-output (MIMO) fast-fading interference channel (IC) with an arbitrary number of antennas at each of the four terminals is studied under the settings of Shannon feedback, limited Shannon feedback, and output feedback, wherein all or certain channel matrices and outputs, or just the channel outputs, respectively, are available to the transmitters with a finite delay. While for most numbers of antennas at the four terminals, it is shown that the DoF regions with Shannon feedback and for the limited Shannon feedback settings considered here are identical, and equal to the DoF region with just delayed channel state information (CSIT), it is shown that this is not always the case. For a specific class of MIMO ICs characterized by a certain relationship between the numbers of antennas at the four nodes, the DoF regions with Shannon and the limited Shannon feedback settings, while again being identical, are strictly bigger than the DoF region with just delayed CSIT. To realize these DoF gains with Shannon or limited Shannon feedback, a new retrospective interference alignment scheme is developed wherein transmitter cooperation made possible by output feedback in addition to delayed CSIT is employed to effect a more efficient form of interference alignment than is feasible with previously known schemes that use just delayed CSIT. The DoF region for just output feedback, in which each transmitter has delayed knowledge of only the receivers' outputs, is also obtained for all but a class of MIMO ICs that satisfy one of two inequalities involving the numbers of antennas.

Connected through hyperedge HE-1 (induced by source paper "on the degrees of freedom of mimo x networks with non cooperation transmitters"):
  with members:
    - "distributed space time interference alignment with moderately delayed csit"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "linear degrees of freedom of the mimo x channel with delayed csit"
    - "degrees of freedom of time correlated miso broadcast channel with delayed csit"
    - "on x channels with feedback and delayed csi"
    - "degrees of freedom region of the mimo x channel with an arbitrary number of antennas"
    - "subspace alignment chains and the degrees of freedom of the three user mimo interference channel"

Connected through hyperedge HE-2 (induced by source paper "informational bottlenecks in two unicast wireless networks with delayed csit"):
  with members:
    - "two user erasure interference channels with local delayed csit"
    - "alignment based network coding for two unicast z networks"
    - "the value of local delayed csit"
    - "capacity results for binary fading interference channels with delayed csit"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "communication through collisions opportunistic utilization of past receptions"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"

Connected through hyperedge HE-3 (induced by source paper "interference and x networks with noisy cooperation and feedback"):
  with members:
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "on x channels with feedback and delayed csi"
    - "interference alignment for the mimo interference channel with delayed local csit"
    - "the degrees of freedom region and interference alignment for the mimo interference channel with delayed csi"
    - "dependence balance based outer bounds for gaussian networks with cooperation and feedback"
    - "interference channels with destination cooperation"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-4 (induced by source paper "degrees of freedom of the rank deficient interference channel with feedback"):
  with members:
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "degrees of freedom of the mimo interference channel with cooperation and cognition"

Connected through hyperedge HE-5 (induced by source paper "capacity results for binary fading interference channels with delayed csit"):
  with members:
    - "two hop interference channels impact of linear schemes"
    - "binary fading interference channel with no csit"
    - "communication through collisions opportunistic utilization of past receptions"
    - "approximate capacity region of the two user miso broadcast channels with delayed csit"
    - "two hop interference channels impact of linear time varying schemes"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"
    - "degrees of freedom of two hop wireless networks everyone gets the entire cake"

Connected through hyperedge HE-6 (induced by source paper "approximate capacity region of the two user miso broadcast channels with delayed csit"):
  with members:
    - "two user erasure interference channels with local delayed csit"
    - "capacity results for binary fading interference channels with delayed csit"
    - "communication through collisions opportunistic utilization of past receptions"
    - "on the vector broadcast channel with alternating csit a topological perspective"
    - "on the degrees of freedom of the k user time correlated broadcast channel with delayed csit"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "layered interference networks with delayed csi dof scaling with distributed transmitters"
    - "degrees of freedom region of the miso broadcast channel with general mixed csit"

Connected through hyperedge HE-7 (induced by source paper "degrees of freedom region of the mimo interference channel with output feedback and delayed csit"):
  with members:
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "interference channels with source cooperation"
    - "the degrees of freedom regions of two user and certain three user mimo broadcast channels with delayed csit"
    - "interference channels with destination cooperation"
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "feedback capacity of the gaussian interference channel to within 2 bits"

Connected through hyperedge HE-8 (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 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"
    - "the degrees of freedom of mimo interference channels without state information at transmitters"
    - "degrees of freedom of the mimo interference channel with cooperation and cognition"

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)