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: "ludii the ludemic general game system"
  Abstract: While current General Game Playing (GGP) systems facilitate useful research in Artificial Intelligence (AI) for game-playing, they are often somewhat specialized and computationally inefficient. In this paper, we describe an initial version of a "ludemic" general game system called Ludii, which has the potential to provide an efficient tool for AI researchers as well game designers, historians, educators and practitioners in related fields. Ludii defines games as structures of ludemes, i.e. high-level, easily understandable game concepts. We establish the foundations of Ludii by outlining its main benefits: generality, extensibility, understandability and efficiency. Experimentally, Ludii outperforms one of the most efficient Game Description Language (GDL) reasoners, based on a propositional network, for all available games in the Tiltyard GGP repository.

Connected through hyperedge HE-1 (induced by source paper "experimental studies in general game playing an experience report"):
  with members:
    - "an empirical evaluation of two general game systems ludii and rbg"
    - "a note on the empirical comparison of rbg and ludii"
    - "regular boardgames"

Connected through hyperedge HE-2 (induced by source paper "ludii as a competition platform"):
  with members:
    - "general video game rule generation"
    - "an empirical evaluation of two general game systems ludii and rbg"
    - "prolonets neural encoding human experts domain knowledge to warm start reinforcement learning"
    - "an overview of the ludii general game system"
    - "the 2017 aibirds competition"
    - "atdelfi automatically designing legible full instructions for games"
    - "deceptive games"
    - "revisiting the arcade learning environment evaluation protocols and open problems for general agents"

Connected through hyperedge HE-3 (induced by source paper "ludii and xcsp playing and solving logic puzzles"):
  with members:
    - "computational complexity of games and puzzles"
    - "xcsp3 an integrated format for benchmarking combinatorial constrained problems"
    - "pspace completeness of sliding block puzzles and other problems through the nondeterministic constraint logic model of computation"

Connected through hyperedge HE-4 (induced by source paper "an empirical evaluation of two general game systems ludii and rbg"):
  with members:
    - "regular boardgames"

Connected through hyperedge HE-5 (induced by source paper "tools for mathematical ludology"):
  with members:
    - "regular boardgames"

Connected through hyperedge HE-6 (induced by source paper "a note on the empirical comparison of rbg and ludii"):
  with members:
    - "an empirical evaluation of two general game systems ludii and rbg"

Connected through hyperedge HE-7 (induced by source paper "an overview of the ludii general game system"):
  with members:
    - "the arcade learning environment an evaluation platform for general agents"

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.AI(Artificial Intelligence)