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 crossing numbers in quadratic time"
  Abstract: We show that for every fixed non-negative integer k there is a quadratic time algorithm that decides whether a given graph has crossing number at most k and, if this is the case, computes a drawing of the graph in the plane with at most k crossings.

Connected through hyperedge HE-1 (induced by source paper "exact crossing number parameterized by vertex cover"):
  with members:
    - "crossing minimization in perturbed drawings"
    - "approximating the rectilinear crossing number"
    - "crossing number for graphs with bounded pathwidth"
    - "parameterized integer quadratic programming variables and coefficients"
    - "adding one edge to planar graphs makes crossing number and 1 planarity hard"
    - "hardness of approximation for crossing number"
    - "an algorithm for the graph crossing number problem"

Connected through hyperedge HE-2 (induced by source paper "maximum cut parameterized by crossing number"):
  with members:
    - "an fpt algorithm for max cut parameterized by crossing number"
    - "a fixed parameter algorithm for the max cut problem on embedded 1 planar graphs"
    - "graph isomorphism for bounded genus graphs in linear time"
    - "bidimensionality and eptas"

Connected through hyperedge HE-3 (induced by source paper "parameterized leaf power recognition via embedding into graph products"):
  with members:
    - "practical access to dynamic programming on tree decompositions"
    - "polynomial time recognition of 4 steiner powers"
    - "listing all maximal cliques in sparse graphs in near optimal time"

Connected through hyperedge HE-4 (induced by source paper "crossing minimization for 1 page and 2 page drawings of graphs with bounded treewidth"):
  with members:
    - "fixed parameter tractability of crossing minimization of almost trees"

Connected through hyperedge HE-5 (induced by source paper "a linear time parameterized algorithm for node unique label cover"):
  with members:
    - "half integrality lp branching and fpt algorithms"
    - "linear time parameterized algorithms via skew symmetric multicuts"
    - "linear time fpt algorithms via network flow"
    - "designing fpt algorithms for cut problems using randomized contractions"
    - "fixed parameter tractability of multicut in directed acyclic graphs"
    - "directed subset feedback vertex set is fixed parameter tractable"
    - "finding small separators in linear time via treewidth reduction"
    - "fixed parameter tractability of directed multiway cut parameterized by the size of the cutset"

Connected through hyperedge HE-6 (induced by source paper "a linear time parameterized algorithm for directed feedback vertex set"):
  with members:
    - "linear recognition of almost interval graphs"
    - "finding small patterns in permutations in linear time"
    - "half integrality lp branching and fpt algorithms"
    - "linear time fpt algorithms via network flow"
    - "faster deterministic feedback vertex set"
    - "faster parameterized algorithms using linear programming"
    - "finding small separators in linear time via treewidth reduction"
    - "solving connectivity problems parameterized by treewidth in single exponential time"

Connected through hyperedge HE-7 (induced by source paper "recognizing and drawing ic planar graphs"):
  with members:
    - "parameterized complexity of 1 planarity"
    - "recognizing optimal 1 planar graphs in linear time"
    - "on the recognition of fan planar and maximal outer fan planar graphs"
    - "the density of fan planar graphs"
    - "on the number of edges of fan crossing free graphs"
    - "adding one edge to planar graphs makes crossing number and 1 planarity hard"
    - "maximizing the total resolution of graphs"
    - "the straight line rac drawing problem is np hard"

Connected through hyperedge HE-8 (induced by source paper "crossing number for graphs with bounded pathwidth"):
  with members:
    - "approximating the rectilinear crossing number"
    - "inserting multiple edges into a planar graph"
    - "hardness of approximation for crossing number"
    - "an algorithm for the graph crossing number problem"

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)