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: "multicut is fpt"
  Abstract: Let $G=(V,E)$ be a graph on $n$ vertices and $R$ be a set of pairs of vertices in $V$ called \emph{requests}. A \emph{multicut} is a subset $F$ of $E$ such that every request $xy$ of $R$ is cut by $F$, \i.e. every $xy$-path of $G$ intersects $F$. We show that there exists an $O(f(k)n^c)$ algorithm which decides if there exists a multicut of size at most $k$. In other words, the \M{} problem parameterized by the solution size $k$ is Fixed-Parameter Tractable. The proof extends to vertex multicuts.

Connected through hyperedge HE-1 (induced by source paper "parameterized inapproximability for steiner orientation by gap amplification"):
  with members:
    - "tight fpt approximations for k median and k means"
    - "constant factor fpt approximation for capacitated k median"
    - "faster exact and approximate algorithms for k cut"
    - "from gap eth to fpt inapproximability clique dominating set and more"
    - "completely inapproximable monotone and antimonotone parameterized problems"
    - "almost polynomial ratio eth hardness of approximating densest k subgraph"
    - "a birthday repetition theorem and complexity of approximating dense csps"
    - "directed multicut is w 1 hard even for four terminal pairs"

Connected through hyperedge HE-2 (induced by source paper "the computational complexity of finding temporal paths under waiting time constraints"):
  with members:
    - "an adaptive version of brandes algorithm for betweenness centrality"
    - "efficient computation of optimal temporal walks under waiting time constraints"
    - "how fast can we reach a target vertex in stochastic temporal graphs"
    - "temporal cliques admit sparse spanners"
    - "fixed parameter algorithms for maximum profit facility location under matroid constraints"
    - "the temporal explorer who returns to the base"
    - "changing times to minimise reachability in temporal graphs"
    - "deleting edges to restrict the size of an epidemic in temporal networks"

Connected through hyperedge HE-3 (induced by source paper "inapproximability within w 1 the case of steiner orientation"):
  with members:
    - "tight fpt approximations for k median and k means"
    - "constant factor fpt approximation for capacitated k median"
    - "faster exact and approximate algorithms for k cut"
    - "from gap eth to fpt inapproximability clique dominating set and more"
    - "completely inapproximable monotone and antimonotone parameterized problems"
    - "directed multicut is w 1 hard even for four terminal pairs"
    - "the parameterized complexity of k biclique"
    - "steiner forest orientation problems"

Connected through hyperedge HE-4 (induced by source paper "fixed parameter tractability of counting small minimum s t cuts"):
  with members:
    - "finding and counting vertex colored subtrees"
    - "minimum bisection 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-5 (induced by source paper "a complexity dichotomy for colourful components problems on k caterpillars and small degree planar graphs"):
  with members:
    - "finding a small number of colourful components"
    - "parameterized complexity and approximation issues for the colorful components problems"
    - "algorithmic and hardness results for the colorful components problems"
    - "fixed parameter tractability of multicut parameterized by the size of the cutset"

Connected through hyperedge HE-6 (induced by source paper "linear kernels for separating a graph into components of bounded size"):
  with members:
    - "on a generalization of nemhauser and trotter s local optimization theorem"
    - "deleting edges to restrict the size of an epidemic a new application for treewidth"
    - "on the computational complexity of vertex integrity and component order connectivity"
    - "minimum bisection is fixed parameter tractable"
    - "minimum k way cut of bounded size is fixed parameter tractable"
    - "finding small separators in linear time via treewidth reduction"
    - "hitting forbidden minors approximation and kernelization"
    - "fixed parameter tractability of multicut parameterized by the size of the cutset"

Connected through hyperedge HE-7 (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"
    - "fixed parameter tractability of multicut in directed acyclic graphs"
    - "representative sets and irrelevant vertices new tools for kernelization"
    - "finding small separators in linear time via treewidth reduction"

Connected through hyperedge HE-8 (induced by source paper "an fpt algorithm for planar multicuts with sources and sinks on the outer face"):
  with members:
    - "a polynomial time algorithm for planar multicuts with few source sink pairs"
    - "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)