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 "sparse image reconstruction on the sphere analysis and synthesis"):
  Abstract: We develop techniques to solve ill-posed inverse problems on the sphere by sparse regularization, exploiting sparsity in both axisymmetric and directional scale-discretized wavelet space. Denoising, inpainting, and deconvolution problems and combinations thereof, are considered as examples. Inverse problems are solved in both the analysis and synthesis settings, with a number of different sampling schemes. The most effective approach is that with the most restricted solution-space, which depends on the interplay between the adopted sampling scheme, the selection of the analysis/synthesis problem, and any weighting of the    $\ell _{1}$    norm appearing in the regularization problem. More efficient sampling schemes on the sphere improve reconstruction fidelity by restricting the solution-space and also by improving sparsity in wavelet space. We apply the technique to denoise  Planck  353-GHz observations, improving the ability to extract the structure of Galactic dust emission, which is important for studying Galactic magnetism.

Includes members:
  Member "localisation of directional scale discretised wavelets on the sphere":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "divergence free polar wavelets for the analysis and representation of fluid flows")
  Member "second generation curvelets on the sphere":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "wavelet based segmentation on the sphere")
  Member "sampling sparse signals on the sphere algorithms and applications":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "variable viewpoint representations for 3d object recognition")
  Member "accurate reconstruction of finite rate of innovation signals on the sphere":
    also connected through other hyperedges:
      (none)
  Member "gauss legendre sampling on the rotation group":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "a novel sampling theorem on the rotation group")
  Member "consistent discretization and minimization of the l1 norm on manifolds":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "the generalized matrix chain algorithm")
  Member "directional spin wavelets on the sphere":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "localisation of directional scale discretised wavelets on the sphere")
  Member "a novel sampling theorem on the rotation group":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "localisation of directional scale discretised wavelets on the sphere")

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)