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: "on the total number of bends for planar octilinear drawings"
  Abstract: An octilinear drawing of a planar graph is one in which each edge is drawn as a sequence of horizontal, vertical and diagonal at 45 degrees line-segments. For such drawings to be readable, special care is needed in order to keep the number of bends small. As the problem of finding planar octilinear drawings of minimum number of bends is NP-hard, in this paper we focus on upper and lower bounds. From a recent result of Keszegh et al. on the slope number of planar graphs, we can derive an upper bound of 4n-10 bends for 8-planar graphs with n vertices. We considerably improve this general bound and corresponding previous ones for triconnected 4-, 5- and 6-planar graphs. We also derive non-trivial lower bounds for these three classes of graphs by a technique inspired by the network flow formulation of Tamassia.

Connected through hyperedge HE-1 (induced by source paper "universal slope sets for upward planar drawings"):
  with members:
    - "planar l drawings of directed graphs"
    - "1 bend upward planar drawings of sp digraphs"
    - "bitonic st orderings for upward planar graphs"
    - "graph drawings with one bend and few slopes"
    - "planar octilinear drawings with one bend per edge"

Connected through hyperedge HE-2 (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"
    - "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"
    - "lombardi drawings of graphs"

Connected through hyperedge HE-3 (induced by source paper "universal slope sets for 1 bend planar drawings"):
  with members:
    - "1 bend upward planar drawings of sp digraphs"
    - "graph drawings with one bend and few slopes"
    - "orthogonal graph drawing with inflexible edges"
    - "planar octilinear drawings with one bend per edge"
    - "outerplanar graph drawings with few slopes"
    - "drawing trees with perfect angular resolution and polynomial area"

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)