human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "efficient vertex label distance oracles for planar graphs"):
  Abstract: We consider distance queries in vertex-labeled planar graphs. For any fixed $0 < \epsilon \leq 1/2$ we show how to preprocess a directed planar graph with vertex labels and arc lengths into a data structure that answers queries of the following form. Given a vertex $u$ and a label $\lambda$ return a $(1+\epsilon)$-approximation of the distance from $u$ to its closest vertex with label $\lambda$. For a directed planar graph with $n$ vertices, such that the ratio of the largest to smallest arc length is bounded by $N$, the preprocessing time is $O(\epsilon^{-2}n\lg^{3}{n}\lg(nN))$, the data structure size is $O(\epsilon^{-1}n\lg{n}\lg(nN))$, and the query time is $O(\lg\lg{n}\lg\lg(nN) + \epsilon^{-1})$. We also point out that a vertex label distance oracle for undirected planar graphs suggested in an earlier version of this paper is incorrect.

Includes members:
  Member "the power of dynamic distance oracles efficient dynamic algorithms for the steiner tree":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "online minimum cost matching on the line with recourse")
  Member "structured recursive separator decompositions for planar graphs in linear time":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on the edge crossings of the greedy spanner")
  Member "approximate distance oracles with improved preprocessing time":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "faster approximation algorithms for computing shortest cycles on weighted graphs")
  Member "linear space approximate distance oracles for planar bounded genus and minor free graphs":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "holiest minimum cost paths and flows in surface graphs")
  Member "improved distance oracles and spanners for vertex labeled graphs":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "conditional lower bounds for space time tradeoffs")

Question: Please tell me which class the source paper 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)