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 "a linear time algorithm for radius optimally augmenting paths in a metric space"):
  Abstract: Let $P$ be a path graph of $n$ vertices embedded in a metric space. We consider the problem of adding a new edge to $P$ to minimize the radius of the resulting graph. Previously, a similar problem for minimizing the diameter of the graph was solved in $O(n\log n)$ time. To the best of our knowledge, the problem of minimizing the radius has not been studied before. In this paper, we present an $O(n)$ time algorithm for the problem, which is optimal.

Includes members:
  Member "almost optimal algorithms for diameter optimally augmenting trees":
    also connected through other hyperedges:
      (none)
  Member "an improved algorithm for diameter optimally augmenting paths in a metric space":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "minimizing the continuous diameter when augmenting a geometric tree with a shortcut")
  Member "fast algorithms for diameter optimally augmenting paths and trees":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "minimizing the continuous diameter when augmenting a geometric tree with a shortcut")
  Member "minimizing the continuous diameter when augmenting a tree with a shortcut":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "computing optimal shortcuts for networks")
  Member "minimizing the continuous diameter when augmenting paths and cycles with shortcuts":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "computing optimal shortcuts for networks")
  Member "augmenting graphs to minimize the diameter":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "computing optimal shortcuts for networks")

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)