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: "describing colors textures and shapes for content based image retrieval a survey"
  Abstract: Visual media has always been the most enjoyed way of communication. From the advent of television to the modern day hand held computers, we have witnessed the exponential growth of images around us. Undoubtedly it’s a fact that they carry a lot of information in them which needs be utilized in an effective manner. Hence intense need has been felt to efficiently index and store large image collections for effective and on-demand retrieval. For this purpose low-level features extracted from the image contents like color, texture and shape has been used. Content based image retrieval systems employing these features has proven very successful. Image retrieval has promising applications in numerous fields and hence has motivated researchers all over the world. New and improved ways to represent visual content are being developed each day. Tremendous amount of research has been carried out in the last decade. In this paper we will present a detailed overview of some of the powerful color, texture and shape descriptors for content based image retrieval. A comparative analysis will also be carried out for providing an insight into outstanding challenges in this field.

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:
    - "a novel magic lsb substitution method m lsb sm using multi level encryption and achromatic component of an image"
    - "an adaptive secret key directed cryptographic scheme for secure transmission in wireless sensor networks"
    - "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 "a novel magic lsb substitution method m lsb sm using multi level encryption and achromatic component of an image"):
  with members:
    - "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"
    - "a novel steganography algorithm for hiding text in image using five modulus method"
    - "colour guided colour image steganography"

Connected through hyperedge HE-3 (induced by source paper "texture and color based image retrieval using the local extrema features and riemannian distance"):
  with members:
    - "texture retrieval via the scattering transform"

Connected through hyperedge HE-4 (induced by source paper "steganography a secure way for transmission in wireless sensor networks"):
  with members:
    - "a novel magic lsb substitution method m lsb sm using multi level encryption and achromatic component of an image"
    - "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"
    - "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-5 (induced by source paper "secure image steganography using cryptography and image transposition"):
  with members:
    - "a novel magic lsb substitution method m lsb sm using multi level encryption and achromatic component of an image"
    - "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.IR(Information Retrieval)