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: "graph theoretic solutions to computational geometry problems"
  Abstract: Many problems in computational geometry are not stated in graph-theoretic terms, but can be solved efficiently by constructing an auxiliary graph and performing a graph-theoretic algorithm on it. Often, the efficiency of the algorithm depends on the special properties of the graph constructed in this way. We survey the art gallery problem, partition into rectangles, minimum-diameter clustering, rectilinear cartogram construction, mesh stripification, angle optimization in tilings, and metric embedding from this perspective.

Connected through hyperedge HE-1 (induced by source paper "rectangle transformation problem"):
  with members:
    - "dissection with the fewest pieces is hard even to approximate"
    - "minimum weight triangulation is np hard"

Connected through hyperedge HE-2 (induced by source paper "how to re divide a cake fairly"):
  with members:
    - "fair and square cake cutting in two dimensions"
    - "cutting a cake without harming the toppings"
    - "envy free cake cutting in two dimensions"
    - "web and internet economics"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "online cake cutting"

Connected through hyperedge HE-3 (induced by source paper "redividing the cake"):
  with members:
    - "envy free cake cutting in two dimensions"
    - "cake cutting algorithms for piecewise constant and piecewise uniform valuations"
    - "online cake cutting"

Connected through hyperedge HE-4 (induced by source paper "counting blanks in polygonal arrangements"):
  with members:
    - "redividing the cake"

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.CG(Computational Geometry)