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: "optimal moebius transformations for information visualization and meshing"
  Abstract: We give linear-time quasiconvex programming algorithms for finding a Moebius transformation of a set of spheres in a unit ball or on the surface of a unit sphere that maximizes the minimum size of a transformed sphere. We can also use similar methods to maximize the minimum distance among a set of pairs of input points. We apply these results to vertex separation and symmetry display in spherical graph drawing, viewpoint selection in hyperbolic browsing, element size control in conformal structured mesh generation, and brain flat mapping.

Connected through hyperedge HE-1 (induced by source paper "the galois complexity of graph drawing why numerical solutions are ubiquitous for force directed spectral and circle packing drawings"):
  with members:
    - "strict confluent drawing"
    - "a note on the unsolvability of the weighted region shortest path problem"
    - "planar lombardi drawings for subcubic graphs"
    - "the graphs of planar soap bubbles"

Connected through hyperedge HE-2 (induced by source paper "contact representations of sparse planar graphs"):
  with members:
    - "planar lombardi drawings for subcubic graphs"
    - "optimal polygonal representation of planar graphs"
    - "minimum weight triangulation is np hard"

Connected through hyperedge HE-3 (induced by source paper "balanced circle packings for planar graphs"):
  with members:
    - "strict confluent drawing"
    - "the galois complexity of graph drawing why numerical solutions are ubiquitous for force directed spectral and circle packing drawings"
    - "planar lombardi drawings for subcubic graphs"
    - "optimal polygonal representation of planar graphs"

Connected through hyperedge HE-4 (induced by source paper "the graphs of planar soap bubbles"):
  with members:
    - "steinitz theorems for simple orthogonal polyhedra"
    - "drawing trees with perfect angular resolution and polynomial area"
    - "planar lombardi drawings for subcubic graphs"
    - "small grid embeddings of 3 polytopes"
    - "lombardi drawings of graphs"
    - "steiner trees and spanning trees in six pin soap films"
    - "moebius invariant natural neighbor interpolation"

Connected through hyperedge HE-5 (induced by source paper "planar lombardi drawings for subcubic graphs"):
  with members:
    - "steinitz theorems for simple orthogonal polyhedra"
    - "drawing trees with perfect angular resolution and polynomial area"
    - "the graphs of planar soap bubbles"
    - "lombardi drawings of graphs"

Connected through hyperedge HE-6 (induced by source paper "the hyperbolic voronoi diagram in arbitrary dimension"):
  with members:
    - "hyperbolic voronoi diagrams made easy"

Connected through hyperedge HE-7 (induced by source paper "hyperbolic voronoi diagrams made easy"):
  with members:
    - "bregman voronoi diagrams properties algorithms and applications"

Connected through hyperedge HE-8 (induced by source paper "optimized color gamuts for tiled displays"):
  with members:
    - "optimal point placement for mesh smoothing"

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)