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: "information transmission using the nonlinear fourier transform part iii spectrum modulation"
  Abstract: Motivated by the looming capacity crunch in fiber-optic networks, information transmission over such systems is revisited. Among numerous distortions, interchannel interference in multiuser wavelength-division multiplexing (WDM) is identified as the seemingly intractable factor limiting the achievable rate at high launch power. However, this distortion and similar ones arising from nonlinearity are primarily due to the use of methods suited for linear systems, namely WDM and linear pulse-train transmission, for the nonlinear optical channel. Exploiting the integrability of the nonlinear Schrodinger (NLS) equation, a nonlinear frequency-division multiplexing (NFDM) scheme is presented, which directly modulates noninteracting signal degrees-of-freedom under NLS propagation. The main distinction between this and previous methods is that NFDM is able to cope with the nonlinearity, and thus, as the signal power or transmission distance is increased, the new method does not suffer from the deterministic crosstalk between signal components, which has degraded the performance of previous approaches. In this paper, emphasis is placed on modulation of the discrete component of the nonlinear Fourier transform of the signal and some simple examples of achievable spectral efficiencies are provided.

Connected through hyperedge HE-1 (induced by source paper "a signal space distance measure for nondispersive optical fiber"):
  with members:
    - "towards a non stochastic information theory"
    - "autocorrelation function for dispersion free fiber channels with distributed amplification"
    - "fast numerical nonlinear fourier transforms"
    - "upper bound on the capacity of the nonlinear schr odinger channel"
    - "design of apsk constellations for coherent optical channels with nonlinear phase noise"
    - "a nonstochastic information theory for communication and state estimation"
    - "optimizing constellations for single subcarrier intensity modulated optical systems"
    - "on the per sample capacity of nondispersive optical fibers"

Connected through hyperedge HE-2 (induced by source paper "dual polarization nonlinear fourier transform based optical communication system"):
  with members:
    - "experimental demonstration of dual polarization nonlinear frequency division multiplexed optical transmission system"
    - "polarization division multiplexing based on the nonlinear fourier transform"

Connected through hyperedge HE-3 (induced by source paper "communication using eigenvalues of higher multiplicity of the nonlinear fourier transform"):
  with members:
    - "experimental demonstration of nonlinear frequency division multiplexed transmission"
    - "information transmission using the nonlinear fourier transform part i mathematical tools"

Connected through hyperedge HE-4 (induced by source paper "statistics of the eigenvalues of a noisy multi soliton pulse"):
  with members:
    - "information transmission using the nonlinear fourier transform part i mathematical tools"

Connected through hyperedge HE-5 (induced by source paper "polarization division multiplexing based on the nonlinear fourier transform"):
  with members:
    - "signaling on the continuous spectrum of nonlinear optical fiber"
    - "why noise and dispersion may seriously hamper nonlinear frequency division multiplexing"
    - "demonstration of fully nonlinear spectrum modulated system in the highly nonlinear optical transmission regime"
    - "fast numerical nonlinear fourier transforms"
    - "information transmission using the nonlinear fourier transform part ii numerical methods"
    - "information transmission using the nonlinear fourier transform part i mathematical tools"

Connected through hyperedge HE-6 (induced by source paper "correlated eigenvalues optical communications"):
  with members:
    - "experimental demonstration of nonlinear frequency division multiplexed transmission"
    - "information transmission using the nonlinear fourier transform part ii numerical methods"
    - "information transmission using the nonlinear fourier transform part i mathematical tools"

Connected through hyperedge HE-7 (induced by source paper "signaling on the continuous spectrum of nonlinear optical fiber"):
  with members:
    - "fast numerical nonlinear fourier transforms"
    - "information transmission using the nonlinear fourier transform part ii numerical methods"
    - "information transmission using the nonlinear fourier transform part i mathematical tools"

Connected through hyperedge HE-8 (induced by source paper "demodulation and detection schemes for a memoryless optical wdm channel"):
  with members:
    - "design of apsk constellations for coherent optical channels with nonlinear phase noise"
    - "interference focusing for simplified optical fiber models with dispersion"
    - "on the per sample capacity of nondispersive optical fibers"

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)