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: "lombardi drawings of graphs"
  Abstract: We introduce the notion of Lombardi graph drawings, named after the American abstract artist Mark Lombardi. In these drawings, edges are represented as circular arcs rather than as line segments or polylines, and the vertices have perfect angular resolution: the edges are equally spaced around each vertex. We describe algorithms for finding Lombardi drawings of regular graphs, graphs of bounded degeneracy, and certain families of planar graphs.

Connected through hyperedge HE-1 (induced by source paper "bipartite and series parallel graphs without planar lombardi drawings"):
  with members:
    - "planar and poly arc lombardi drawings"
    - "lombardi drawings of knots and links"
    - "drawing trees with perfect angular resolution and polynomial area"

Connected through hyperedge HE-2 (induced by source paper "on a conjecture of lov asz on circle representations of simple 4 regular planar graphs"):
  with members:
    - "drawing trees with perfect angular resolution and polynomial area"

Connected through hyperedge HE-3 (induced by source paper "orthogonal and smooth orthogonal layouts of 1 planar graphs with low edge complexity"):
  with members:
    - "a survey on graph drawing beyond planarity"
    - "an annotated bibliography on 1 planarity"
    - "smooth orthogonal drawings of planar graphs"
    - "1 visibility representations of 1 planar graphs"

Connected through hyperedge HE-4 (induced by source paper "low ply drawings of trees and 2 trees"):
  with members:
    - "on vertex and empty ply proximity drawings"
    - "a new approach to graphmaps a system browsing large graphs as interactive maps"
    - "graphmaps browsing large graphs as interactive maps"

Connected through hyperedge HE-5 (induced by source paper "planar and poly arc lombardi drawings"):
  with members:
    - "optimal 3d angular resolution for low degree graphs"
    - "drawing trees with perfect angular resolution and polynomial area"

Connected through hyperedge HE-6 (induced by source paper "on smooth orthogonal and octilinear drawings relations complexity and kandinsky drawings"):
  with members:
    - "drawing hv restricted planar graphs"
    - "arc diagrams flip distances and hamiltonian triangulations"
    - "on the total number of bends for planar octilinear drawings"
    - "orthogonal graph drawing with inflexible edges"
    - "planar octilinear drawings with one bend per edge"
    - "smooth orthogonal drawings of planar graphs"
    - "planar lombardi drawings for subcubic graphs"

Connected through hyperedge HE-7 (induced by source paper "lombardi drawings of knots and links"):
  with members:
    - "planar and poly arc lombardi drawings"
    - "smooth orthogonal drawings of planar graphs"
    - "planar lombardi drawings for subcubic graphs"
    - "on a tree and a path with no geometric simultaneous embedding"

Connected through hyperedge HE-8 (induced by source paper "d3 reducible graphs"):
  with members:
    - "a planarity test via construction sequences"

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)