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: "sefe with no mapping via large induced outerplane graphs in plane graphs"
  Abstract: We show that every $n$-vertex planar graph admits a simultaneous embedding with no mapping and with fixed edges with any $(n/2)$-vertex planar graph. In order to achieve this result, we prove that every $n$-vertex plane graph has an induced outerplane subgraph containing at least $n/2$ vertices. Also, we show that every $n$-vertex planar graph and every $n$-vertex planar partial 3-tree admit a simultaneous embedding with no mapping and with fixed edges.

Connected through hyperedge HE-1 (induced by source paper "on the mathcal np hardness of gracsim drawing and k sefe problems"):
  with members:
    - "simultaneous drawing of planar graphs with right angle crossings and few bends"
    - "simultaneous embeddings with few bends and crossings"
    - "simultaneous visibility representations of plane st graphs using l shapes"
    - "simultaneous embedding edge orderings relative positions cutvertices"
    - "drawing partially embedded and simultaneously planar graphs"
    - "advancements on sefe and partitioned book embedding problems"
    - "simultaneous embedding of planar graphs"
    - "simultaneous pq ordering with applications to constrained embedding problems"

Connected through hyperedge HE-2 (induced by source paper "the utility of untangling"):
  with members:
    - "superpatterns and universal point sets"
    - "how many vertex locations can be arbitrarily chosen when drawing planar graphs"
    - "on universal point sets for planar graphs"
    - "simultaneous embedding of planar graphs"
    - "untangling planar graphs from a specified vertex position hard cases"
    - "untangling polygons and graphs"
    - "on a tree and a path with no geometric simultaneous embedding"
    - "untangling a planar graph"

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.DS(Data Structures and Algorithms)