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 model for an intelligent and adaptive tutor based on web by jackson s learning styles profiler and expert systems"
  Abstract: Todays, Intelligent and web-based E-Learning is one of the important area in E-Learning. This paper integrates an intelligent and web-based E-Learning with expert system technology to be able to model the learning styles of the learners using Jackson's model. It is intelligent because it can interact with the learners and offer them some subjects in Pedagogy view. Learning process of this system is in the following. First it determines learner's individual characteristics and learning styles based on a questionnaire in Jackson's learning styles profiler. Learning styles profiler is a modern measure of individual differences in learning style. Then learner's model is obtained and an Expert system simulator plans a "pre-test" and rates him. The concept would be presented if the learner scores enough. Subsequently, the system evaluates him by a "post-test". Finally the learner's model would be updated by the modeler based on try-and-error. The proposed system can be available Every Time and Every Where (ETEW) through the web. It improves the learning performance and has some important advantages such as high speed, simplicity of learning, low cost and be available ETEW.

Connected through hyperedge HE-1 (induced by source paper "a paradigm for the application of cloud computing in mobile intelligent tutoring systems"):
  with members:
    - "a web based multilingual intelligent tutor system based on jackson s learning styles profiler and expert systems"
    - "an adaptive and intelligent tutor by expert systems for mobile devices"
    - "a web based adaptive and intelligent tutor by expert systems"
    - "cloud computing through mobile learning"

Connected through hyperedge HE-2 (induced by source paper "a web based multilingual intelligent tutor system based on jackson s learning styles profiler and expert systems"):
  with members:
    - "a web based adaptive and intelligent tutor by expert systems"

Connected through hyperedge HE-3 (induced by source paper "an adaptive and intelligent tutor by expert systems for mobile devices"):
  with members:
    - "a web based adaptive and intelligent tutor by expert systems"

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.CY(Computers and Society)