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: "buchi determinization made tighter"
  Abstract: By separating the principal acceptance mechanism from the concrete acceptance condition of a given B\"{u}chi automaton with $n$ states,Schewe presented the construction of an equivalent deterministic Rabin transition automaton with $o((1.65n)^n)$ states via \emph{history trees}, which can be simply translated to a standard Rabin automaton with $o((2.26n)^n)$ states. Apart from the inherent simplicity, Schewe's construction improved Safra's construction (which requires $12^nn^{2n}$ states). However, the price that is paid is the use of $2^{n-1}$ Rabin pairs (instead of $n$ in Safra's construction). Further, by introducing the \emph{later introduction record} as a record tailored for ordered trees, deterministic automata with Parity acceptance condition is constructed which exactly resembles Piterman's determinization with Parity acceptance condition where the state complexity is $O((n!)^2)$ and the index complexity is $2n$.In this paper, we improve Schewe's construction to $2^{\lceil (n-1)/2\rceil}$ Rabin pairs with the same state complexity. Meanwhile, we give a new determinization construction of Parity automata with the state complexity being $o(n^2(0.69n\sqrt{n})^n)$ and index complexity being $n$.

Connected through hyperedge HE-1 (induced by source paper "permutation games for the weakly aconjunctive mu calculus"):
  with members:
    - "determinising parity automata"
    - "the fixpoint iteration algorithm for parity games"
    - "exptime tableaux for the coalgebraic mu calculus"

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.FL(Formal Languages and Automata Theory)