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 "string periods in the order preserving model"):
  Abstract: The order-preserving model (op-model, in short) was introduced quite recently but has already attracted significant attention because of its applications in data analysis. We introduce several types of periods in this setting (op-periods). Then we give algorithms to compute these periods in time $O(n)$, $O(n\log\log n)$, $O(n \log^2 \log n/\log \log \log n)$, $O(n\log n)$ depending on the type of periodicity. In the most general variant the number of different periods can be as big as $\Omega(n^2)$, and a compact representation is needed. Our algorithms require novel combinatorial insight into the properties of such periods.

Includes members:
  Member "a note on easy and efficient computation of full abelian periods of a word":
    also connected through other hyperedges:
      (none)
  Member "an encoding for order preserving matching":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "the effective entropy of next previous larger smaller value queries")
  Member "efficient algorithms for the order preserving pattern matching problem":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "order preserving pattern matching on trees and dags")
  Member "algorithms for computing abelian periods of words":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "on the parikh de bruijn grid")
  Member "single and multiple consecutive permutation motif search":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "order preserving pattern matching indeterminate strings")
  Member "a note on efficient computation of all abelian periods in a string":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "computing abelian regularities on rle strings")

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)