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: "mimo mac bc duality with linear feedback coding schemes"
  Abstract: We show that for the multi-antenna Gaussian multi-access channel (MAC) and broadcast channel (BC) with perfect feedback, the rate regions achieved by linear-feedback coding schemes (called linear-feedback capacity regions) coincide when the same total input-power constraint is imposed on both channels and when the MAC channel matrices are the transposes of the BC channel matrices. Such a pair of MAC and BC is called dual. We also identify sub-classes of linear-feedback coding schemes that achieve the linear-feedback capacity regions of these two channels and present multi-letter expressions for the linear-feedback capacity regions. Moreover, within the two sub-classes of coding schemes that achieve the linear-feedback capacity regions for a given MAC and its dual BC, we identify for each MAC scheme a BC scheme and for each BC scheme a MAC scheme so that the two schemes have same total input power and achieve the same rate regions.

Connected through hyperedge HE-1 (induced by source paper "on the energy distortion tradeoff of gaussian broadcast channels with feedback"):
  with members:
    - "on the ozarow leung scheme for the gaussian broadcast channel with feedback"
    - "interactive schemes for the awgn channel with noisy feedback"
    - "insufficiency of linear feedback schemes in gaussian broadcast channels with common message"
    - "source channel coding theorems for the multiple access relay channel"
    - "lqg control approach to gaussian broadcast channels with feedback"
    - "optimality and approximate optimality of source channel separation in networks"
    - "variations on a theme by schalkwijk and kailath"
    - "sending a bivariate gaussian source over a gaussian mac with feedback"

Connected through hyperedge HE-2 (induced by source paper "concatenated coding using linear schemes for gaussian broadcast channels with noisy channel output feedback"):
  with members:
    - "the awgn bc with mac feedback a reduction to noiseless feedback via interaction"
    - "on the noisy feedback capacity of gaussian broadcast channels"
    - "an achievable rate region for the broadcast channel with feedback"
    - "capacity of all nine models of channel output feedback for the two user interference channel"
    - "using channel output feedback to increase throughput in hybrid arq"
    - "lqg control approach to gaussian broadcast channels with feedback"
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"

Connected through hyperedge HE-3 (induced by source paper "the awgn bc with mac feedback a reduction to noiseless feedback via interaction"):
  with members:
    - "the gaussian channel with noisy feedback improving reliability via interaction"
    - "the gaussian channel with noisy feedback near capacity performance via simple interaction"
    - "an achievable rate region for the broadcast channel with feedback"
    - "lqg control approach to gaussian broadcast channels with feedback"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"
    - "joint wyner ziv dirty paper coding by modulo lattice modulation"

Connected through hyperedge HE-4 (induced by source paper "on the noisy feedback capacity of gaussian broadcast channels"):
  with members:
    - "an achievable rate region for the broadcast channel with feedback"
    - "any positive feedback rate increases the capacity of strictly less noisy broadcast channels"
    - "on the capacity of the discrete memoryless broadcast channel with feedback"

Connected through hyperedge HE-5 (induced by source paper "posterior matching for gaussian broadcast channels with feedback"):
  with members:
    - "on the capacity of symmetric gaussian interference channels with feedback"
    - "posterior matching scheme for gaussian multiple access channel with feedback"
    - "lqg control approach to gaussian broadcast channels with feedback"
    - "optimal feedback communication via posterior matching"
    - "the pre log of gaussian broadcast with feedback can be two"

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)