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 "retrospective interference alignment"):
  Abstract: We explore similarities and differences in recent works on blind interference alignment under different models such as staggered block fading model and the delayed CSIT model. In particular we explore the possibility of achieving interference alignment with delayed CSIT when the transmitters are distributed. Our main contribution is an interference alignment scheme, called retrospective interference alignment in this work, that is specialized to settings with distributed transmitters. With this scheme we show that the 2 user X channel with only delayed channel state information at the transmitters can achieve 8/7 DoF, while the interference channel with 3 users is able to achieve 9/8 DoF. We also consider another setting where delayed channel output feedback is available to transmitters. In this setting the X channel and the 3 user interference channel are shown to achieve 4/3 and 6/5 DoF, respectively.

Includes members:
  Member "aiming perfectly in the dark blind interference alignment through staggered antenna switching":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "linear degrees of freedom of mimo broadcast channels with reconfigurable antennas in the absence of csit")
  Member "exploiting channel correlations simple interference alignment schemes with no csit":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "achievable dof delay trade offs for the k user mimo interference channel with delayed csit")
  Member "the degrees of freedom of mimo interference channels without state information at transmitters":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "k user symmetric m times n mimo interference channel under finite precision csit a gdof perspective")
  Member "error exponents for the gaussian channel with active noisy feedback":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "achievable error exponents of one way and two way awgn channels")
  Member "on the degrees of freedom of the compound mimo broadcast channels with finite states":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "optimality of simple layered superposition coding in the 3 user miso bc with finite precision csit")
  Member "isotropic mimo interference channels without csit the loss of degrees of freedom":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "elements of cellular blind interference alignment aligned frequency reuse wireless index coding and interference diversity")
  Member "on degrees of freedom region of mimo networks without csit":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "the degrees of freedom region of temporally correlated mimo networks with delayed csit")
  Member "the degrees of freedom regions of mimo broadcast interference and cognitive radio channels with no csit":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "k user symmetric m times n mimo interference channel under finite precision csit a gdof perspective")

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)