human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "simultaneous fpq ordering and hybrid planarity testing"):
  Abstract: We study the interplay between embedding constrained planarity and hybrid planarity testing. We consider a constrained planarity testing problem, called 1-Fixed Constrained Planarity, and prove that this problem can be solved in quadratic time for biconnected graphs. Our solution is based on a new definition of fixedness that makes it possible to simplify and extend known techniques about Simultaneous PQ-Ordering. We apply these results to different variants of hybrid planarity testing, including a relaxation of NodeTrix Planarity with fixed sides, that allows rows and columns to be independently permuted.

Includes members:
  Member "graph planarity testing with hierarchical embedding constraints":
    also connected through other hyperedges:
      (none)
  Member "computing k modal embeddings of planar digraphs":
    also connected through other hyperedges:
      (none)
  Member "turning cliques into paths to achieve planarity":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "computing k modal embeddings of planar digraphs")
  Member "nodetrix planarity testing with small clusters":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "computing k modal embeddings of planar digraphs")
  Member "computing nodetrix representations of clustered graphs":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "c planarity testing of embedded clustered graphs with bounded dual carving width")
  Member "intersection link representations of graphs":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "c planarity testing of embedded clustered graphs with bounded dual carving width")
  Member "beyond level planarity":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "extending upward planar graph drawings")
  Member "simultaneous pq ordering with applications to constrained embedding problems":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "atomic embeddability clustered planarity and thickenability")

Question: Please tell me which class the source paper 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)