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: "approximating the diameter of planar graphs in near linear time"
  Abstract: We present a $(1+\epsilon)$-approximation algorithm running in $O(f(\epsilon)\cdot n \log^4 n)$ time for finding the diameter of an undirected planar graph with non-negative edge lengths.

Connected through hyperedge HE-1 (induced by source paper "planar diameter via metric compression"):
  with members:
    - "exact distance oracles for planar graphs with failing vertices"
    - "minor excluded network families admit fast distributed algorithms"
    - "distributed treewidth computation"
    - "faster distributed shortest path approximations via shortcuts"
    - "constant query time 1 epsilon approximate distance oracle for planar graphs"
    - "fast and compact exact distance oracle for planar graphs"
    - "voronoi diagrams on planar graphs and computing the diameter in deterministic tilde o n 5 3 time"
    - "better tradeoffs for exact distance oracles in planar graphs"

Connected through hyperedge HE-2 (induced by source paper "approximation algorithms for min distance problems"):
  with members:
    - "towards tight approximation bounds for graph diameter and eccentricities"
    - "faster all pairs shortest paths via circuit complexity"
    - "computing the diameter polynomially faster than apsp"
    - "subgraph isomorphism in planar graphs and related problems"

Connected through hyperedge HE-3 (induced by source paper "parameterized complexity of diameter"):
  with members:
    - "towards improving brandes algorithm for betweenness centrality"
    - "towards tight approximation bounds for graph diameter and eccentricities"
    - "data reduction for maximum matching on real world graphs theory and experiments"
    - "multivariate analysis of orthogonal range searching and graph distances parameterized by treewidth"
    - "efficient and adaptive parameterized algorithms on modular decompositions"
    - "parameterized aspects of triangle enumeration"
    - "fully polynomial fpt algorithms for some classes of bounded clique width graphs"
    - "voronoi diagrams on planar graphs and computing the diameter in deterministic tilde o n 5 3 time"

Connected through hyperedge HE-4 (induced by source paper "subquadratic algorithms for the diameter and the sum of pairwise distances in planar graphs"):
  with members:
    - "fast and compact exact distance oracle for planar graphs"
    - "voronoi diagrams on planar graphs and computing the diameter in deterministic tilde o n 5 3 time"
    - "better tradeoffs for exact distance oracles in planar graphs"
    - "optimal parameterized algorithms for planar facility location problems using voronoi diagrams"
    - "faster shortest paths in dense distance graphs with applications"
    - "structured recursive separator decompositions for planar graphs in linear time"
    - "multiple source shortest paths in embedded graphs"
    - "linear space approximate distance oracles for planar bounded genus and minor free graphs"

Connected through hyperedge HE-5 (induced by source paper "constant query time 1 epsilon approximate distance oracle for planar graphs"):
  with members:
    - "approximate distance oracles for planar graphs with improved query time space tradeoff"
    - "approximate distance oracle with constant query time"
    - "structured recursive separator decompositions for planar graphs in linear time"
    - "exact distance oracles for planar graphs"

Connected through hyperedge HE-6 (induced by source paper "popular conjectures as a barrier for dynamic planar graph algorithms"):
  with members:
    - "improved bounds for shortest paths in dense distance graphs"
    - "on the hardness of partially dynamic graph problems and connections to diameter"
    - "faster online matrix vector multiplication"
    - "unifying and strengthening hardness for dynamic problems via the online matrix vector multiplication conjecture"
    - "simpler faster and shorter labels for distances in graphs"
    - "sublinear distance labeling for sparse graphs"
    - "a faster algorithm for the discrete frechet distance under translation"
    - "fully dynamic matching in bipartite graphs"

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)