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: "time and parallelizability results for parity games with bounded tree and dag width"
  Abstract: Parity games are a much researched class of games in NP intersect CoNP that#N#are not known to be in P. Consequently, researchers have considered specialised#N#algorithms for the case where certain graph parameters are small. In this#N#paper, we study parity games on graphs with bounded treewidth, and graphs with#N#bounded DAG width. We show that parity games with bounded DAG width can be#N#solved in O(n^(k+3) k^(k + 2) (d + 1)^(3k + 2)) time, where n, k, and d are the#N#size, treewidth, and number of priorities in the parity game. This is an#N#improvement over the previous best algorithm, given by Berwanger et al., which#N#runs in n^O(k^2) time. We also show that, if a tree decomposition is provided,#N#then parity games with bounded treewidth can be solved in O(n k^(k + 5) (d +#N#1)^(3k + 5)) time. This improves over previous best algorithm, given by#N#Obdrzalek, which runs in O(n d^(2(k+1)^2)) time. Our techniques can also be#N#adapted to show that the problem of solving parity games with bounded treewidth#N#lies in the complexity class NC^2, which is the class of problems that can be#N#efficiently parallelized. This is in stark contrast to the general parity game#N#problem, which is known to be P-hard, and thus unlikely to be contained in NC.

Connected through hyperedge HE-1 (induced by source paper "partial solvers for parity games effective polynomial time composition"):
  with members:
    - "fatal attractors in parity games building blocks for partial solvers"
    - "benchmarks for parity games"
    - "the rabin index of parity games"

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.GT(Computer Science and Game Theory)