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 diversity multiplexing tradeoff of the symmetric mimo 2 user interference channel"
  Abstract: The fundamental diversity-multiplexing tradeoff (DMT) of the quasi-static fading, symmetric $2$-user MIMO interference channel (IC) with channel state information at the transmitters (CSIT) and a short term average power constraint is obtained. The general case is considered where the interference-to-noise ratio (INR) at each receiver scales differently from the signal-to-noise ratio (SNR) at the receivers. The achievability of the DMT is proved by showing that a simple Han-Kobayashi coding scheme can achieve a rate region which is within a constant (independent of SNR) number of bits from a set of upper bounds to the capacity region of the IC. In general, only part of the DMT curve with CSIT can be achieved by coding schemes which do not use any CSIT (No-CSIT). A result in this paper establishes a threshold for the INR beyond which the DMT with CSIT coincides with that with No-CSIT. Our result also settles one of the conjectures made in~\cite{EaOlCv}. Furthermore, the fundamental DMT of a class of non-symmetric ICs with No-CSIT is also obtained wherein the two receivers have different numbers of antennas.

Connected through hyperedge HE-1 (induced by source paper "the diversity multiplexing tradeoff of the mimo half duplex relay channel"):
  with members:
    - "wireless network information flow a deterministic approach"
    - "the diversity multiplexing tradeoff of the dynamic decode and forward protocol on a mimo half duplex relay channel"
    - "the diversity multiplexing tradeoff of the mimo z interference channel"
    - "noisy network coding"
    - "the diversity multiplexing tradeoff of the symmetric mimo half duplex relay channel"
    - "diversity multiplexing tradeoff for the mimo static half duplex relay"
    - "diversity multiplexing tradeoff of the half duplex relay channel"

Connected through hyperedge HE-2 (induced by source paper "the capacity region of the mimo interference channel and its reciprocity to within a constant gap"):
  with members:
    - "capacity regions and sum rate capacities of vector gaussian interference channels"
    - "the diversity multiplexing tradeoff of the mimo z interference channel"
    - "a new outer bound and the noisy interference sum rate capacity for gaussian interference channels"
    - "capacity bounds for the gaussian interference channel"
    - "the two user gaussian interference channel a deterministic view"
    - "gaussian interference channel capacity to within one bit"

Connected through hyperedge HE-3 (induced by source paper "the diversity multiplexing tradeoff of the mimo z interference channel"):
  with members:
    - "the capacity region of the mimo interference channel and its reciprocity to within a constant gap"
    - "the diversity multiplexing tradeoff of the mimo half duplex relay channel"
    - "the diversity multiplexing tradeoff of the dynamic decode and forward protocol on a mimo half duplex relay channel"
    - "capacity regions and sum rate capacities of vector gaussian interference channels"
    - "diversity multiplexing tradeoff in fading interference channels"
    - "diversity multiplexing tradeoff of the two user interference channel"
    - "the diversity multiplexing tradeoff for interference networks"
    - "capacity bounds for the gaussian interference channel"

Connected through hyperedge HE-4 (induced by source paper "the diversity multiplexing tradeoff of the dynamic decode and forward protocol on a mimo half duplex relay channel"):
  with members:
    - "the diversity multiplexing tradeoff of the mimo half duplex relay channel"
    - "the diversity multiplexing tradeoff of the mimo z interference channel"
    - "the diversity multiplexing tradeoff of the symmetric mimo half duplex relay channel"
    - "diversity multiplexing tradeoff for the mimo static half duplex relay"
    - "diversity multiplexing tradeoff of the half duplex relay channel"
    - "capacity and character expansions moment generating function and other exact results for mimo correlated channels"

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)