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: "strict confluent drawing"
  Abstract: We define strict confluent drawing, a form of confluent drawing in which the existence of an edge is indicated by the presence of a smooth path through a system of arcs and junctions (without crossings), and in which such a path, if it exists, must be unique. We prove that it is NP-complete to determine whether a given graph has a strict confluent drawing but polynomial to determine whether it has an outerplanar strict confluent drawing with a fixed vertex ordering (a drawing within a disk, with the vertices placed in a given order on the boundary).

Connected through hyperedge HE-1 (induced by source paper "on strict outer confluent graphs"):
  with members:
    - "confluent hasse diagrams"
    - "split decomposition and graph labelled trees characterizations and fully dynamic algorithms for totally decomposable graphs"
    - "confluent layered drawings"
    - "delta confluent drawings"
    - "confluent drawings visualizing non planar diagrams in a planar way"

Connected through hyperedge HE-2 (induced by source paper "further towards unambiguous edge bundling investigating power confluent drawings for network visualization"):
  with members:
    - "graph drawing by stochastic gradient descent"
    - "improved optimal and approximate power graph compression for clearer visualisation of dense graphs"
    - "confluent layered drawings"
    - "delta confluent drawings"
    - "confluent drawings visualizing non planar diagrams in a planar way"

Connected through hyperedge HE-3 (induced by source paper "the bundled crossing number"):
  with members:
    - "hardness of approximation for crossing number"
    - "an algorithm for the graph crossing number problem"
    - "confluent drawings visualizing non planar diagrams in a planar way"

Connected through hyperedge HE-4 (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:
    - "a note on the unsolvability of the weighted region shortest path problem"
    - "planar lombardi drawings for subcubic graphs"
    - "the graphs of planar soap bubbles"
    - "optimal moebius transformations for information visualization and meshing"

Connected through hyperedge HE-5 (induced by source paper "balanced circle packings for planar graphs"):
  with members:
    - "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"
    - "optimal moebius transformations for information visualization and meshing"

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)