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: "interference alignment at finite snr for time invariant channels"
  Abstract: An achievable rate region, based on lattice interference alignment, is derived for a class of time-invariant Gaussian interference channels with more than two users. The result is established via a new coding theorem for the two-user Gaussian multiple-access channel where both users use a single linear code. The class of interference channels treated is such that all interference channel gains are rational. For this class of interference channels, beyond recovering the known results on the degrees of freedom, an explicit rate region is derived for finite signal-to-noise ratios, shedding light on the nature of previously established asymptotic results.

Connected through hyperedge HE-1 (induced by source paper "feasibility of interference alignment for the mimo interference channel"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "on the number of interference alignment solutions for the k user mimo channel with constant coefficients"
    - "interference alignment using finite and dependent channel extensions the single beam case"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "a feasibility test for linear interference alignment in mimo channels with constant coefficients"
    - "interactive interference alignment"
    - "degrees of freedom of interference channels with comp transmission and reception"

Connected through hyperedge HE-2 (induced by source paper "lattice codes for the gaussian relay channel decode and forward and compress and forward"):
  with members:
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "wireless network information flow a deterministic approach"
    - "reliable physical layer network coding"
    - "nested lattice codes for gaussian relay networks with interference"
    - "computation alignment capacity approximation without noise accumulation"
    - "structured interference mitigation in two hop networks"
    - "a lattice compress and forward scheme"
    - "list decoding for nested lattices and applications to relay channels"

Connected through hyperedge HE-3 (induced by source paper "interference alignment from degrees of freedom to constant gap capacity approximations"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "wireless network information flow a deterministic approach"
    - "the degrees of freedom of compute and forward"
    - "a digital interface for gaussian relay and interference networks lifting codes from the discrete superposition model"
    - "completely stale transmitter channel state information is still very useful"
    - "retrospective interference alignment"
    - "interference mitigation through limited transmitter cooperation"
    - "the approximate capacity of the many to one and one to many gaussian interference channels"

Connected through hyperedge HE-4 (induced by source paper "ergodic interference alignment"):
  with members:
    - "real interference alignment exploiting the potential of single antenna systems"
    - "the approximate sum capacity of the symmetric gaussian k user interference channel"
    - "on the degrees of freedom achievable through interference alignment in a mimo interference channel"
    - "delay rate tradeoff in ergodic interference alignment"
    - "the ergodic capacity of phase fading interference networks"
    - "settling the feasibility of interference alignment for the mimo interference channel the symmetric square case"
    - "interference alignment based sum capacity bounds for random dense gaussian interference networks"
    - "ergodic fading interference channels sum capacity and separability"

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)