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: "the power of deferral maintaining a constant competitive steiner tree online"
  Abstract: In the online Steiner tree problem, a sequence of points is revealed one-by-one: when a point arrives, we only have time to add a single edge connecting this point to the previous ones, and we want to minimize the total length of edges added. For two decades, we know that the greedy algorithm maintains a tree whose cost is O(log n) times the Steiner tree cost, and this is best possible. But suppose, in addition to the new edge we add, we can change a single edge from the previous set of edges: can we do much better? Can we maintain a tree that is constant-competitive? #R##N#We answer this question in the affirmative. We give a primal-dual algorithm, and a novel dual-based analysis, that makes only a single swap per step (in addition to adding the edge connecting the new point to the previous ones), and such that the tree's cost is only a constant times the optimal cost. #R##N#Previous results for this problem gave an algorithm that performed an amortized constant number of swaps: for each n, the number of swaps in the first n steps was O(n). We also give a simpler tight analysis for this amortized case.

Connected through hyperedge HE-1 (induced by source paper "scattering and sparse partitions and their applications"):
  with members:
    - "lossless prioritized embeddings"
    - "labelings vs embeddings on distributed representations of distances"
    - "on strong diameter padded decompositions"
    - "a face cover perspective to ell_1 embeddings of planar graphs"
    - "flow cut gaps and face covers in planar graphs"
    - "near isometric terminal embeddings for doubling metrics"
    - "light spanners for high dimensional norms via stochastic decompositions"
    - "steiner point removal with distortion o log k"

Connected through hyperedge HE-2 (induced by source paper "online minimum cost matching on the line with recourse"):
  with members:
    - "online bipartite matching with amortized o log 2 n replacements"
    - "a collection of lower bounds for online matching on the line"
    - "the power of dynamic distance oracles efficient dynamic algorithms for the steiner tree"

Connected through hyperedge HE-3 (induced by source paper "lp based algorithms for multistage minimization problems"):
  with members:
    - "multistage vertex cover"
    - "online multistage subset maximization problems"
    - "multistage knapsack"
    - "changing bases multistage optimization for matroids and matchings"
    - "facility location in evolving metrics"
    - "dynamic facility location via exponential clocks"
    - "on the tradeoff between stability and fit"
    - "a new multilayered pcp and the hardness of hypergraph vertex cover"

Connected through hyperedge HE-4 (induced by source paper "multistage knapsack"):
  with members:
    - "changing bases multistage optimization for matroids and matchings"
    - "facility location in evolving metrics"
    - "on the tradeoff between stability and fit"

Connected through hyperedge HE-5 (induced by source paper "online maximum matching with recourse"):
  with members:
    - "relaxing the irrevocability requirement for online graph algorithms"
    - "online bipartite matching with amortized o log 2 n replacements"
    - "online steiner tree with deletions"
    - "improved bounds for online preemptive matching"
    - "buyback problem approximate matroid intersection with cancellation costs"

Connected through hyperedge HE-6 (induced by source paper "maintaining perfect matchings at low cost"):
  with members:
    - "optimal analysis of an online algorithm for the bipartite matching problem on a line"
    - "online steiner tree with deletions"

Connected through hyperedge HE-7 (induced by source paper "online bipartite matching with amortized o log 2 n replacements"):
  with members:
    - "the shortest augmenting paths for online matchings on trees"
    - "online and dynamic algorithms for set cover"
    - "online steiner tree with deletions"
    - "navigating central path with electrical flows from flows to matchings and back"
    - "the power of dynamic distance oracles efficient dynamic algorithms for the steiner tree"
    - "better bounds for matchings in the streaming model"

Connected through hyperedge HE-8 (induced by source paper "online constrained forest and prize collecting network design"):
  with members:
    - "online network design algorithms via hierarchical decompositions"

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)