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: "an efficient branching algorithm for interval completion"
  Abstract: We study the \emph{{interval completion}} problem, which asks for the insertion of a set of at most $k$ edges to make a graph of $n$ vertices into an interval graph. We focus on chordal graphs with no small obstructions, where every remaining obstruction is known to have a shallow property. From such a shallow obstruction we single out a subset 6 or 7 vertices, called the frame, and 5 missed edges in the subgraph induced by the frame. We show that if none of these edges is inserted, then the frame cannot be altered at all, and the whole obstruction is also fixed, by and large, in the sense that their related positions in an interval representation of the objective interval graph have a specific pattern. We propose a simple bounded search process, which effectively transforms a given graph to a graph with the structural property that all obstructions are shallow and have fixed frames. Then we fill in polynomial time all obstructions that have been previously left in indecision. These efforts together deliver a simple parameterized algorithm of time $6^k\cdot n^{O(1)}$ for the problem, significantly improving the only known parameterized algorithm of time $k^{2k}\cdot n^{O(1)}$.

Connected through hyperedge HE-1 (induced by source paper "interval deletion is fixed parameter tractable"):
  with members:
    - "on feedback vertex set new measure and new structures"
    - "chordal editing is fixed parameter tractable"
    - "d cos r is fpt via interval deletion"
    - "planar f deletion approximation and optimal fpt algorithms"
    - "obtaining a planar graph by vertex deletion"

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)