human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "spoke darts for high dimensional blue noise sampling"):
  Abstract: We present spoke darts for efficient high dimensional blue noise sampling with applications in meshing, optimization, and motion planning.

Includes members:
  Member "a literature survey of benchmark functions for global optimisation problems":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "nature inspired optimization algorithms challenges and open problems")
  Member "a fast algorithm for well spaced points and approximate delaunay graphs":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "approximating nearest neighbor distances")
  Member "k d darts sampling by k dimensional flat searches":
    also connected through other hyperedges:
      (none)
  Member "a new approach to output sensitive voronoi diagrams and delaunay triangulations":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "faster geometric algorithms via dynamic determinant computation")
  Member "gap processing for adaptive maximal poisson disk sampling":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "vorocrust voronoi meshing without clipping")

Question: Please tell me which class the source paper 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.GR(Graphics)