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: "jungles bundles and fixed parameter tractability"
  Abstract: We give a fixed-parameter tractable (FPT) approximation algorithm computing the path-width of a tournament, and more generally, of a semi-complete digraph. Based on this result, we prove that topological containment and rooted immersion problems are FPT on semi-complete digraphs.

Connected through hyperedge HE-1 (induced by source paper "comparing linear width parameters for directed graphs"):
  with members:
    - "on the pathwidth of almost semicomplete digraphs"
    - "the rank width of edge coloured graphs"
    - "subexponential parameterized algorithm for computing the cutwidth of a semi complete digraph"
    - "matroid pathwidth and code trellis complexity"

Connected through hyperedge HE-2 (induced by source paper "on the pathwidth of almost semicomplete digraphs"):
  with members:
    - "computing cutwidth and pathwidth of semi complete digraphs via degree orderings"

Connected through hyperedge HE-3 (induced by source paper "subexponential parameterized algorithm for computing the cutwidth of a semi complete digraph"):
  with members:
    - "computing cutwidth and pathwidth of semi complete digraphs via degree orderings"
    - "faster algorithms for feedback arc set tournament kemeny rank aggregation and betweenness tournament"

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)