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: "a novel magic lsb substitution method m lsb sm using multi level encryption and achromatic component of an image"
  Abstract: Image Steganography is a thriving research area of information security where secret data is embedded in images to hide its existence while getting the minimum possible statistical detectability. This paper proposes a novel magic least significant bit substitution method (M-LSB-SM) for RGB images. The proposed method is based on the achromatic component (I-plane) of the hue-saturation-intensity (HSI) color model and multi-level encryption (MLE) in the spatial domain. The input image is transposed and converted into an HSI color space. The I-plane is divided into four sub-images of equal size, rotating each sub-image with a different angle using a secret key. The secret information is divided into four blocks, which are then encrypted using an MLE algorithm (MLEA). Each sub-block of the message is embedded into one of the rotated sub-images based on a specific pattern using magic LSB substitution. Experimental results validate that the proposed method not only enhances the visual quality of stego images but also provides good imperceptibility and multiple security levels as compared to several existing prominent methods.

Connected through hyperedge HE-1 (induced by source paper "a new image steganographic technique using pattern based bits shuffling and magic lsb for grayscale images"):
  with members:
    - "an adaptive secret key directed cryptographic scheme for secure transmission in wireless sensor networks"
    - "describing colors textures and shapes for content based image retrieval a survey"
    - "a secure cyclic steganographic technique for color images using randomization"
    - "a novel image steganographic approach for hiding text in color images using hsi color model"
    - "ontology based secure retrieval of semantically significant visual contents"
    - "secure image steganography using cryptography and image transposition"

Connected through hyperedge HE-2 (induced by source paper "steganography a secure way for transmission in wireless sensor networks"):
  with members:
    - "a new image steganographic technique using pattern based bits shuffling and magic lsb for grayscale images"
    - "an adaptive secret key directed cryptographic scheme for secure transmission in wireless sensor networks"
    - "describing colors textures and shapes for content based image retrieval a survey"
    - "a secure cyclic steganographic technique for color images using randomization"
    - "a novel image steganographic approach for hiding text in color images using hsi color model"
    - "ontology based secure retrieval of semantically significant visual contents"
    - "secure image steganography using cryptography and image transposition"
    - "on topological properties of wireless sensor networks under the q composite key predistribution scheme with on off channels"

Connected through hyperedge HE-3 (induced by source paper "secure image steganography using cryptography and image transposition"):
  with members:
    - "describing colors textures and shapes for content based image retrieval a survey"
    - "a secure cyclic steganographic technique for color images using randomization"
    - "colour guided colour image steganography"

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.MM(Multimedia)