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: "tight kernel bounds for problems on graphs with small degeneracy"
  Abstract: In this paper we consider kernelization for problems on d-degenerate graphs, i.e. graphs such that any subgraph contains a vertex of degree at most $d$. This graph class generalizes many classes of graphs for which effective kernelization is known to exist, e.g. planar graphs, H-minor free graphs, and H-topological-minor free graphs. We show that for several natural problems on d-degenerate graphs the best known kernelization upper bounds are essentially tight.

Connected through hyperedge HE-1 (induced by source paper "lossy kernels for connected dominating set on sparse graphs"):
  with members:
    - "from gap eth to fpt inapproximability clique dominating set and more"
    - "on the number of types in sparse graphs"
    - "the generalised colouring numbers on classes of bounded expansion"
    - "characterising bounded expansion by neighbourhood complexity"
    - "polynomial kernels and wideness properties of nowhere dense graph classes"
    - "bidimensionality and kernels"
    - "neighborhood complexity and kernelization for nowhere dense classes of graphs"
    - "approximation algorithms for polynomial expansion and low density graphs"

Connected through hyperedge HE-2 (induced by source paper "sparsification upper and lower bounds for graph problems and not all equal sat"):
  with members:
    - "optimal sparsification for some binary csps using low degree polynomials"
    - "data reduction for graph coloring problems"
    - "on sparsification for computing treewidth"
    - "kernelization lower bounds by cross composition"
    - "kernelization of packing problems"
    - "kernel bounds for path and cycle problems"
    - "co nondeterminism in compositions a kernelization lower bound for a ramsey type problem"
    - "dominating set is fixed parameter tractable in claw free graphs"

Connected through hyperedge HE-3 (induced by source paper "kernelization and sparseness the case of dominating set"):
  with members:
    - "kernelization using structural parameters on sparse graph classes"
    - "kernels for connected dominating set on graphs with excluded topological subgraphs"
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"
    - "polynomial time data reduction for dominating set"
    - "deciding first order properties of locally tree decomposable structures"

Connected through hyperedge HE-4 (induced by source paper "on sparsification for computing treewidth"):
  with members:
    - "fpt is characterized by useful obstruction sets"
    - "kernelization lower bounds by cross composition"
    - "kernel bounds for structural parameterizations of pathwidth"
    - "kernelization of packing problems"
    - "preprocessing for treewidth a combinatorial analysis through kernelization"
    - "hitting forbidden minors approximation and kernelization"
    - "cross composition a new technique for kernelization lower bounds"

Connected through hyperedge HE-5 (induced by source paper "point line cover the easy kernel is essentially tight"):
  with members:
    - "kernelization of packing problems"
    - "co nondeterminism in compositions a kernelization lower bound for a ramsey type problem"

Connected through hyperedge HE-6 (induced by source paper "kernels for connected dominating set on graphs with excluded topological subgraphs"):
  with members:
    - "linear kernels and single exponential algorithms via protrusion decompositions"
    - "parameterized complexity of directed steiner tree on sparse graphs"
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"
    - "bidimensionality and geometric graphs"
    - "hitting forbidden minors approximation and kernelization"
    - "bidimensionality and eptas"
    - "beyond bidimensionality parameterized subexponential algorithms on directed graphs"
    - "solving dominating set in larger classes of graphs fpt algorithms and polynomial kernels"

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)