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: "improved algorithms for one pair and k pair streett objectives"
  Abstract: The computation of the winning set for one-pair Streett objectives and for k-pair Streett objectives in (standard) graphs as well as in game graphs are central problems in computer-aided verification, with application to the verification of open systems, checking interface compatibility, well-formedness of specifications, the synthesis of systems from specifications, and the synthesis of reactive systems. We give faster algorithms for the computation of the winning set for (1) one-pair Streett objectives (aka parity-3 problem) in game graphs and (2) for k-pair Streett objectives in graphs. For both problems this represents the first improvement in asymptotic running time in 15 years.

Connected through hyperedge HE-1 (induced by source paper "near linear time algorithms for streett objectives in graphs and mdps"):
  with members:
    - "decremental strongly connected components and single source reachability in near linear time"
    - "a storm is coming a modern probabilistic model checker"
    - "from ltl to deterministic automata a safraless compositional approach"
    - "improved algorithms for parity and streett objectives"
    - "automata with generalized rabin pairs for probabilistic model checking and ltl synthesis"

Connected through hyperedge HE-2 (induced by source paper "quasipolynomial set based symbolic algorithms for parity games"):
  with members:
    - "solving parity games using an automata based algorithm"
    - "oink an implementation and evaluation of modern parity game solvers"
    - "lower bounds for symbolic computation on graphs strongly connected components liveness safety and diameter"
    - "an ordered approach to solving parity games in quasi polynomial time and quasi linear space"
    - "succinct progress measures for solving parity games"
    - "winning cores in parity games"
    - "generating and solving symbolic parity games"
    - "the fixpoint iteration algorithm for parity games"

Connected through hyperedge HE-3 (induced by source paper "symbolic algorithms for graphs and markov decision processes with fairness objectives"):
  with members:
    - "lower bounds for symbolic computation on graphs strongly connected components liveness safety and diameter"
    - "a storm is coming a modern probabilistic model checker"
    - "from ltl to deterministic automata a safraless compositional approach"
    - "automata with generalized rabin pairs for probabilistic model checking and ltl synthesis"

Connected through hyperedge HE-4 (induced by source paper "an ordered approach to solving parity games in quasi polynomial time and quasi linear space"):
  with members:
    - "symmetric strategy improvement"
    - "an exponential lower bound for the latest deterministic strategy iteration algorithms"
    - "non oblivious strategy improvement"
    - "from nondeterministic b uchi and streett automata to deterministic parity automata"

Connected through hyperedge HE-5 (induced by source paper "succinct progress measures for solving parity games"):
  with members:
    - "a short proof of correctness of the quasi polynomial time algorithm for parity games"
    - "an ordered approach to solving parity games in quasi polynomial time and quasi linear space"
    - "new deterministic algorithms for solving parity games"

Connected through hyperedge HE-6 (induced by source paper "improved set based symbolic algorithms for parity games"):
  with members:
    - "a short proof of correctness of the quasi polynomial time algorithm for parity games"
    - "winning cores in parity games"

Connected through hyperedge HE-7 (induced by source paper "model and objective separation with conditional lower bounds disjunction is harder than conjunction"):
  with members:
    - "finding 2 edge and 2 vertex strongly connected components in quadratic time"
    - "quadratic conditional lower bounds for string problems and dynamic time warping"
    - "approximation and fixed parameter subquadratic algorithms for radius and diameter"
    - "why walking the dog takes time frechet distance has no strongly subquadratic algorithms unless seth fails"
    - "powers of tensors and fast matrix multiplication"
    - "edit distance cannot be computed in strongly subquadratic time unless seth is false"
    - "faster all pairs shortest paths via circuit complexity"
    - "qualitative analysis of partially observable markov decision processes"

Connected through hyperedge HE-8 (induced by source paper "finding 2 edge and 2 vertex strongly connected components in quadratic time"):
  with members:
    - "2 edge connectivity in directed graphs"
    - "on computing the 2 vertex connected components of directed 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)