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: "kernelization and parameterized algorithms for 3 path vertex cover"
  Abstract: A 3-path vertex cover in a graph is a vertex subset $C$ such that every path of three vertices contains at least one vertex from $C$. The parameterized 3-path vertex cover problem asks whether a graph has a 3-path vertex cover of size at most $k$. In this paper, we give a kernel of $5k$ vertices and an $O^*(1.7485^k)$-time and polynomial-space algorithm for this problem, both new results improve previous known bounds.

Connected through hyperedge HE-1 (induced by source paper "l path vertex cover is easier than l hitting set for small l"):
  with members:
    - "faster parameterized algorithm for cluster vertex deletion"
    - "faster fpt algorithm for 5 path vertex cover"
    - "an o 2 619 k algorithm for 4 path vertex cover"
    - "parameterized algorithm for 3 path vertex cover"

Connected through hyperedge HE-2 (induced by source paper "faster parameterized algorithm for cluster vertex deletion"):
  with members:
    - "parameterized algorithm for 3 path vertex cover"
    - "exact algorithms via monotone local search"

Connected through hyperedge HE-3 (induced by source paper "an o 2 619 k algorithm for 4 path vertex cover"):
  with members:
    - "parameterized algorithm for 3 path vertex cover"

Connected through hyperedge HE-4 (induced by source paper "diminishable parameterized problems and strict polynomial kernelization"):
  with members:
    - "kernelization lower bounds for finding constant size subgraphs"
    - "polynomial fixed parameter algorithms a case study for longest path on interval graphs"
    - "known algorithms for edge clique cover are probably optimal"

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)