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: "playing mastermind with constant size memory"
  Abstract: We analyze the classic board game of Mastermind with $n$ holes and a constant number of colors. A result of Chv\'atal (Combinatorica 3 (1983), 325-329) states that the codebreaker can find the secret code with $\Theta(n / \log n)$ questions. We show that this bound remains valid if the codebreaker may only store a constant number of guesses and answers. In addition to an intrinsic interest in this question, our result also disproves a conjecture of Droste, Jansen, and Wegener (Theory of Computing Systems 39 (2006), 525-544) on the memory-restricted black-box complexity of the OneMax function class.

Connected through hyperedge HE-1 (induced by source paper "black box complexity of the binary value function"):
  with members:
    - "optimal parameter choices via precise black box analysis"
    - "runtime analysis of the 1 λ λ genetic algorithm on random satisfiable 3 cnf formulas"
    - "ranking based black box complexity"
    - "reducing the arity in unbiased black box complexity"
    - "more effective crossover operators for the all pairs shortest path problem"
    - "faster black box algorithms through higher arity operators"

Connected through hyperedge HE-2 (induced by source paper "complexity theory for discrete black box optimization heuristics"):
  with members:
    - "optimal parameter choices via precise black box analysis"
    - "runtime analysis of the 1 λ λ genetic algorithm on random satisfiable 3 cnf formulas"
    - "the 1 1 elitist black box complexity of leadingones"
    - "onemax in black box models with several restrictions"
    - "optimal parameter choices through self adjustment applying the 1 5 th rule in discrete settings"
    - "ranking based black box complexity"
    - "reducing the arity in unbiased black box complexity"
    - "a new method for lower bounds on the running time of evolutionary algorithms"

Connected through hyperedge HE-3 (induced by source paper "better fixed arity unbiased black box algorithms"):
  with members:
    - "optimal parameter choices via precise black box analysis"
    - "optimal parameter choices through self adjustment applying the 1 5 th rule in discrete settings"
    - "ranking based black box complexity"
    - "reducing the arity in unbiased black box complexity"
    - "faster black box algorithms through higher arity operators"

Connected through hyperedge HE-4 (induced by source paper "standard steady state genetic algorithms can hillclimb faster than mutation only evolutionary algorithms"):
  with members:
    - "fast genetic algorithms"
    - "escaping local optima using crossover with emergent or reinforced diversity"
    - "the right mutation strength for multi valued decision variables"
    - "optimal parameter choices through self adjustment applying the 1 5 th rule in discrete settings"
    - "playing mastermind with many colors"
    - "a new method for lower bounds on the running time of evolutionary algorithms"

Connected through hyperedge HE-5 (induced by source paper "on the query complexity of black peg ab mastermind"):
  with members:
    - "the worst case number of questions in generalized ab game with and without white peg answers"
    - "improved approximation algorithm for the number of queries necessary to identify a permutation"
    - "playing mastermind with many colors"
    - "hardness of mastermind"
    - "on the algorithmic complexity of the mastermind game with black peg results"
    - "the mastermind attack on genomic data"
    - "mastermind is np complete"

Connected through hyperedge HE-6 (induced by source paper "the 1 1 elitist black box complexity of leadingones"):
  with members:
    - "onemax in black box models with several restrictions"
    - "ranking based black box complexity"
    - "black box complexity breaking the o n log n barrier of leadingones"
    - "a new method for lower bounds on the running time of evolutionary algorithms"
    - "faster black box algorithms through higher arity operators"

Connected through hyperedge HE-7 (induced by source paper "the worst case number of questions in generalized ab game with and without white peg answers"):
  with members:
    - "improved approximation algorithm for the number of queries necessary to identify a permutation"
    - "playing mastermind with many colors"
    - "hardness of mastermind"
    - "on the algorithmic complexity of the mastermind game with black peg results"
    - "mastermind is np complete"

Connected through hyperedge HE-8 (induced by source paper "onemax in black box models with several restrictions"):
  with members:
    - "ranking based black box complexity"
    - "reducing the arity in unbiased black box complexity"
    - "faster black box algorithms through higher arity operators"

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)