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: "fast cosine transform to increase speed up and efficiency of karhunen loeve transform for lossy image compression"
  Abstract: In this work, we present a comparison between two techniques of image compression. In the first case, the image is divided in blocks which are collected according to zig-zag scan. In the second one, we apply the Fast Cosine Transform to the image, and then the transformed image is divided in blocks which are collected according to zig-zag scan too. Later, in both cases, the Karhunen-Loeve transform is applied to mentioned blocks. On the other hand, we present three new metrics based on eigenvalues for a better comparative evaluation of the techniques. Simulations show that the combined version is the best, with minor Mean Absolute Error (MAE) and Mean Squared Error (MSE), higher Peak Signal to Noise Ratio (PSNR) and better image quality. Finally, new technique was far superior to JPEG and JPEG2000.

Connected through hyperedge HE-1 (induced by source paper "quantum spectral analysis frequency in time with applications to signal and image processing"):
  with members:
    - "enhanced directional smoothing algorithm for edge preserving smoothing of synthetic aperture radar images"
    - "kalman s shrinkage for wavelet based despeckling of sar images"
    - "denoising based on wavelets and deblurring via self organizing map for synthetic aperture radar images"
    - "fuzzy thresholding in wavelet domain for speckle reduction in synthetic aperture radar images"
    - "neural shrinkage for wavelet based sar despeckling"
    - "new wavelet based superresolution algorithm for speckle reduction in sar images"
    - "rule of three for superresolution of still images with applications to compression and denoising"
    - "quantum image representation through two dimensional quantum states and normalized amplitude"

Connected through hyperedge HE-2 (induced by source paper "quantum spectral analysis bandwidth at time"):
  with members:
    - "enhanced directional smoothing algorithm for edge preserving smoothing of synthetic aperture radar images"
    - "denoising based on wavelets and deblurring via self organizing map for synthetic aperture radar images"
    - "fuzzy thresholding in wavelet domain for speckle reduction in synthetic aperture radar images"
    - "neural shrinkage for wavelet based sar despeckling"
    - "new wavelet based superresolution algorithm for speckle reduction in sar images"
    - "quantum image representation through two dimensional quantum states and normalized amplitude"

Connected through hyperedge HE-3 (induced by source paper "lossless compression catalyst based on binary allocation via modular arithmetic"):
  with members:
    - "union is strength in lossy image compression"

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.CV(Computer Vision and Pattern Recognition)