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: "computing cartograms with optimal complexity"
  Abstract: In a rectilinear dual of a planar graph vertices are represented by simple rectilinear polygons and edges are represented by side-contact between the corresponding polygons. A rectilinear dual is called a cartogram if the area of each region is equal to a pre-specified weight of the corresponding vertex. The complexity of a cartogram is determined by the maximum number of corners (or sides) required for any polygon. In a series of papers the polygonal complexity of such representations for maximal planar graphs has been reduced from the initial 40 to 34, then to 12 and very recently to the currently best known 10. Here we describe a construction with 8-sided polygons, which is optimal in terms of polygonal complexity as 8-sided polygons are sometimes necessary. Specifically, we show how to compute the combinatorial structure and how to refine the representation into an area-universal rectangular layout in linear time. The exact cartogram can be computed from the area-universal rectangular layout with numerical iteration, or can be approximated with a hill-climbing heuristic. #R##N#We also describe an alternative construction for Hamiltonian maximal planar graphs, which allows us to directly compute the cartograms in linear time. Moreover, we prove that even for Hamiltonian graphs 8-sided rectilinear polygons are necessary, by constructing a non-trivial lower bound example. The complexity of the cartograms can be reduced to 6 if the Hamiltonian path has the extra property that it is one-legged, as in outer-planar graphs. Thus, we have optimal representations (in terms of both polygonal complexity and running time) for Hamiltonian maximal planar and maximal outer-planar graphs.

Connected through hyperedge HE-1 (induced by source paper "homothetic triangle representations of planar graphs"):
  with members:
    - "dushnik miller dimension of td delaunay complexes"
    - "planar graphs as l intersection or l contact graphs"
    - "optimal polygonal representation of planar graphs"
    - "on touching triangle graphs"

Connected through hyperedge HE-2 (induced by source paper "homotopy height grid major height and graph drawing height"):
  with members:
    - "on the complexity of optimal homotopies"
    - "flat foldings of plane graphs with prescribed angles and edge lengths"
    - "how to walk your dog in the mountains with no magic leash"

Connected through hyperedge HE-3 (induced by source paper "computing stable demers cartograms"):
  with members:
    - "the state of the art in cartograms"
    - "recognizing weighted disk contact graphs"
    - "area universal rectangular layouts"

Connected through hyperedge HE-4 (induced by source paper "on the area universality of triangulations"):
  with members:
    - "windrose planarity embedding graphs with direction constrained edges"
    - "forall exists mathbb r completeness and area universality"
    - "the state of the art in cartograms"

Connected through hyperedge HE-5 (induced by source paper "the state of the art in cartograms"):
  with members:
    - "evaluating cartogram effectiveness"
    - "circular arc cartograms"

Connected through hyperedge HE-6 (induced by source paper "pixel and voxel representations of graphs"):
  with members:
    - "1 visibility representations of 1 planar graphs"
    - "bar 1 visibility graphs and their relation to other nearly planar graphs"
    - "equilateral l contact graphs"
    - "on triangulating k outerplanar graphs"
    - "optimal polygonal representation of planar graphs"
    - "rectangular layouts and contact graphs"

Connected through hyperedge HE-7 (induced by source paper "visualizing cartograms goals and task taxonomy"):
  with members:
    - "circular arc cartograms"

Connected through hyperedge HE-8 (induced by source paper "circular arc cartograms"):
  with members:
    - "multiple source multiple sink maximum flow in directed planar graphs in near linear time"
    - "area universal rectangular layouts"

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.DM(Discrete Mathematics)