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: "fpt algorithms for connected feedback vertex set"
  Abstract: We study the recently introduced Connected Feedback Vertex Set (CFVS) problem from the view-point of parameterized algorithms. CFVS is the connected variant of the classical Feedback Vertex Set problem and is defined as follows: given a graph G=(V,E) and an integer k, decide whether there exists a subset F of V, of size at most k, such that G[V F] is a forest and G[F] is connected. We show that Connected Feedback Vertex Set can be solved in time $O(2^{O(k)}n^{O(1)})$ on general graphs and in time $O(2^{O(\sqrt{k}\log k)}n^{O(1)})$ on graphs excluding a fixed graph H as a minor. Our result on general undirected graphs uses as subroutine, a parameterized algorithm for Group Steiner Tree, a well studied variant of Steiner Tree. We find the algorithm for Group Steiner Tree of independent interest and believe that it will be useful for obtaining parameterized algorithms for other connectivity problems.

Connected through hyperedge HE-1 (induced by source paper "an improved fpt algorithm for independent feedback vertex set"):
  with members:
    - "linear time kernelization for feedback vertex set"
    - "simultaneous feedback vertex set a parameterized perspective"
    - "on feedback vertex set new measure and new structures"
    - "half integrality lp branching and fpt algorithms"
    - "faster deterministic feedback vertex set"
    - "on group feedback vertex set parameterized by the size of the cutset"
    - "representative sets and irrelevant vertices new tools for kernelization"
    - "solving connectivity problems parameterized by treewidth in single exponential time"

Connected through hyperedge HE-2 (induced by source paper "degree constrained 2 partitions of graphs"):
  with members:
    - "parameterized approximate defective coloring"
    - "independent feedback vertex sets for graphs of bounded diameter"

Connected through hyperedge HE-3 (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-4 (induced by source paper "minimum connected transversals in graphs new hardness results and tractable cases using the price of connectivity"):
  with members:
    - "independent feedback vertex set for p_5 free graphs"
    - "enumeration and maximum number of minimal connected vertex covers in graphs"
    - "the price of connectivity for vertex cover"
    - "solving connectivity problems parameterized by treewidth in single exponential time"

Connected through hyperedge HE-5 (induced by source paper "on directed steiner trees with multiple roots"):
  with members:
    - "fixed parameter and approximation algorithms a new look"
    - "parameterized complexity of directed steiner tree on sparse graphs"

Connected through hyperedge HE-6 (induced by source paper "tight running time lower bounds for vertex deletion problems"):
  with members:
    - "drawing complete binary tanglegrams hardness approximation fixed parameter tractability"

Connected through hyperedge HE-7 (induced by source paper "parameterized complexity of directed steiner tree on sparse graphs"):
  with members:
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"
    - "solving connectivity problems parameterized by treewidth in single exponential time"
    - "solving dominating set in larger classes of graphs fpt algorithms and polynomial kernels"
    - "linear time algorithms for finding a dominating set of fixed size in degenerated graphs"

Connected through hyperedge HE-8 (induced by source paper "minimizing movement fixed parameter tractability"):
  with members:
    - "algorithms for rapidly dispersing robot swarms in unknown environments"
    - "subgraph isomorphism in planar graphs and related problems"

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)