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: "fixed parameter tractability of multicut in directed acyclic graphs"
  Abstract: The MULTICUT problem, given a graph G, a set of terminal pairs T={(s_i,t_i) | 1 <= i <= r} and an integer p, asks whether one can find a cutset consisting of at most p non-terminal vertices that separates all the terminal pairs, i.e., after removing the cutset, t_i is not reachable from s_i for each 1 <= i <= r. The fixed-parameter tractability of MULTICUT in undirected graphs, parameterized by the size of the cutset only, has been recently proven by Marx and Razgon (STOC'11) and, independently, by Bousquet et al. (STOC'11), after resisting attacks as a long-standing open problem. In this paper we prove that MULTICUT is fixed-parameter tractable on directed acyclic graphs, when parameterized both by the size of the cutset and the number of terminal pairs. We complement this result by showing that this is implausible for parameterization by the size of the cutset only, as this version of the problem remains W[1]-hard.

Connected through hyperedge HE-1 (induced by source paper "a relaxation of the directed disjoint paths problem a global congestion metric helps"):
  with members:
    - "dual parameterization of weighted coloring"
    - "the complexity landscape of fixed parameter directed steiner network problems"
    - "routing with congestion in acyclic digraphs"
    - "the directed grid theorem"
    - "network sparsification for steiner problems on planar and bounded genus graphs"
    - "the planar directed k vertex disjoint paths problem is fixed parameter tractable"
    - "parameterized complexity of directed steiner tree on sparse graphs"
    - "fixed parameter tractability of directed multiway cut parameterized by the size of the cutset"

Connected through hyperedge HE-2 (induced by source paper "covering small independent sets and separators with applications to parameterized algorithms"):
  with members:
    - "clustering with local restrictions"
    - "a linear time parameterized algorithm for node unique label cover"
    - "a linear time parameterized algorithm for directed feedback vertex set"
    - "linear time fpt algorithms via network flow"
    - "faster parameterized algorithms using linear programming"
    - "representative sets and irrelevant vertices new tools for kernelization"
    - "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-3 (induced by source paper "odd multiway cut in directed acyclic graphs"):
  with members:
    - "min max theorems for packing and covering odd u v trails"
    - "a linear time parameterized algorithm for directed feedback vertex set"
    - "linear time parameterized algorithms via skew symmetric multicuts"
    - "linear time fpt algorithms via network flow"
    - "faster parameterized algorithms using linear programming"
    - "finding small separators in linear time via treewidth reduction"
    - "compression via matroids a randomized polynomial kernel for odd cycle transversal"
    - "fixed parameter tractability of directed multiway cut parameterized by the size of the cutset"

Connected through hyperedge HE-4 (induced by source paper "on directed feedback vertex set parameterized by treewidth"):
  with members:
    - "slightly superexponential parameterized problems"
    - "a linear time parameterized algorithm for directed feedback vertex set"
    - "optimal parameterized algorithms for planar facility location problems using voronoi diagrams"
    - "directed multicut is w 1 hard even for four terminal pairs"
    - "directed subset feedback vertex set is fixed parameter tractable"
    - "representative sets and irrelevant vertices new tools for kernelization"
    - "fixed parameter tractability of directed multiway cut parameterized by the size of the cutset"

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"
    - "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"
    - "fixed parameter tractability of multicut parameterized by the size of the cutset"

Connected through hyperedge HE-6 (induced by source paper "directed multicut is w 1 hard even for four terminal pairs"):
  with members:
    - "half integrality lp branching and fpt algorithms"
    - "list h coloring a graph by removing few vertices"
    - "minimum bisection is fixed parameter tractable"
    - "designing fpt algorithms for cut problems using randomized contractions"
    - "faster parameterized algorithms using linear programming"
    - "finding small separators in linear time via treewidth reduction"
    - "clique cover and graph separation new incompressibility results"
    - "steiner forest orientation problems"

Connected through hyperedge HE-7 (induced by source paper "parameterized complexity of critical node cuts"):
  with members:
    - "deleting edges to restrict the size of an epidemic a new application for treewidth"
    - "an o 1 84 k parameterized algorithm for the multiterminal cut problem"
    - "parameterized complexity dichotomy for steiner multicut"
    - "on the computational complexity of vertex integrity and component order connectivity"
    - "kernelization lower bounds by cross composition"
    - "finding small separators in linear time via treewidth reduction"
    - "on multiway cut parameterized above lower bounds"
    - "multicut is fpt"

Connected through hyperedge HE-8 (induced by source paper "a parameterized algorithm for mixed cut"):
  with members:
    - "chordal editing is fixed parameter tractable"
    - "designing fpt algorithms for cut problems using randomized contractions"
    - "reducing the rank of a matroid"
    - "minimum k way cut of bounded size 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"
    - "multicut is fpt"
    - "fixed parameter tractability of multicut parameterized by the size of the cutset"

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)