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: "linear degrees of freedom of the mimo x channel with delayed csit"
  Abstract: We study the degrees of freedom (DoF) of the multiple-input multiple-output X-channel (MIMO XC) with delayed channel state information at the transmitters (delayed CSIT), assuming linear coding strategies at the transmitters. We present two results: 1) the linear sum DoF for MIMO XC with general antenna configurations, and 2) the linear DoF region for MIMO XC with symmetric antennas. The converse for each result is based on developing a novel rank-ratio inequality that characterizes the maximum ratio between the dimensions of received linear subspaces at the two multiple-antenna receivers. The achievability of the linear sum DoF is based on a three-phase strategy, in which during the first two phases only the transmitter with fewer antennas exploits delayed CSIT in order to minimize the dimension of its signal at the unintended receiver. During Phase 3, both transmitters use delayed CSIT to send linear combinations of past transmissions such that each receiver receives a superposition of desired message data and known interference, thus simultaneously serving both receivers. We also derive other linear DoF outer bounds for the MIMO XC that, in addition to the outer bounds from the sum DoF converse and the proposed transmission strategy, allow us to characterize the linear DoF region for symmetric antenna configurations.

Connected through hyperedge HE-1 (induced by source paper "linear degrees of freedom of mimo broadcast channels with reconfigurable antennas in the absence of csit"):
  with members:
    - "fundamental limits of spectrum sharing full duplex multicell networks"
    - "degrees of freedom of full duplex cellular networks with reconfigurable antennas at base station"
    - "real interference alignment exploiting the potential of single antenna systems"
    - "degrees of freedom of uplink downlink multiantenna cellular networks"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "diophantine approach to blind interference alignment of homogeneous k user 2x1 miso broadcast channels"
    - "a new outer bound via interference localization and the degrees of freedom regions of mimo interference networks with no csit"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-2 (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"
    - "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"
    - "the degrees of freedom region of the mimo interference channel with shannon feedback"

Connected through hyperedge HE-3 (induced by source paper "the generalized degrees of freedom region of the mimo z interference channel with delayed csit"):
  with members:
    - "the degrees of freedom region of temporally correlated mimo networks with delayed 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"
    - "degrees of freedom region of the miso broadcast channel with general mixed csit"
    - "optimal use of current and outdated channel state information degrees of freedom of the miso bc with mixed csit"
    - "completely stale transmitter channel state information is still very useful"
    - "feedback capacity of the gaussian interference channel to within 2 bits"
    - "gaussian interference channel capacity to within one bit"

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"
    - "secure degrees of freedom of mimo x channels with output feedback and delayed csit"
    - "on x channels with feedback and delayed csi"

Connected through hyperedge HE-5 (induced by source paper "retrospective interference alignment for the mimo interference broadcast channel"):
  with members:
    - "achievable dof delay trade offs for the k user mimo interference channel with delayed csit"
    - "degrees of freedom of the k user miso interference channel with delayed local csit"
    - "on the degrees of freedom of the k user miso interference channel with imperfect delayed csit"
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-6 (induced by source paper "retrospective interference alignment for two cell uplink mimo cellular networks with delayed csit"):
  with members:
    - "on the degrees of freedom of k user siso interference and x channels with delayed csit"
    - "spatial degrees of freedom of the multicell mimo multiple access channel"
    - "completely stale transmitter channel state information is still very useful"
    - "downlink interference alignment"

Connected through hyperedge HE-7 (induced by source paper "on the degrees of freedom of siso x channel with alternating csit"):
  with members:
    - "a dof optimal scheme for the two user x channel with synergistic alternating csit"
    - "completely stale transmitter channel state information is still very useful"

Connected through hyperedge HE-8 (induced by source paper "a dof optimal scheme for the two user x channel with synergistic alternating csit"):
  with members:
    - "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)