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: "experimental study of the shortest reset word of random automata"
  Abstract: In this paper we describe an approach to finding the shortest reset word of a finite synchronizing automaton by using a SAT solver. We use this approach to perform an experimental study of the length of the shortest reset word of a finite synchronizing automaton. The largest automata we considered had 100 states. The results of the experiments allow us to formulate a hypothesis that the length of the shortest reset word of a random finite automaton with $n$ states and 2 input letters with high probability is sublinear with respect to $n$ and can be estimated as $1.95 n^{0.55}.$

Connected through hyperedge HE-1 (induced by source paper "using sat solvers for synchronization issues in non deterministic automata"):
  with members:
    - "lower bounds for synchronizing word lengths in partial automata"
    - "directable fuzzy and nondeterministic automata"
    - "primitive sets of nonnegative matrices and synchronizing automata"
    - "generating shortest synchronizing sequences using answer set programming"

Connected through hyperedge HE-2 (induced by source paper "checking whether an automaton is monotonic is np complete"):
  with members:
    - "on nonpermutational transformation semigroups with an application to syntactic complexity"
    - "synchronizing automata with large reset lengths"
    - "large aperiodic semigroups"
    - "the complexity of finding reset words in finite automata"
    - "approximating the minimum length of synchronizing words is hard"
    - "decision problems for convex languages"

Connected through hyperedge HE-3 (induced by source paper "primitive digraphs with large exponents and slowly synchronizing automata"):
  with members:
    - "independent sets of words and the synchronization problem"
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "the complexity of finding reset words in finite automata"
    - "approximating the minimum length of synchronizing words is hard"
    - "slowly synchronizing automata and digraphs"
    - "the cerny conjecture for one cluster automata with prime length cycle"
    - "aspects of enumeration and generation with a string automata representation"
    - "the road coloring problem"

Connected through hyperedge HE-4 (induced by source paper "a fast algorithm finding the shortest reset words"):
  with members:
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "the complexity of finding reset words in finite automata"
    - "approximating the minimum length of synchronizing words is hard"
    - "slowly synchronizing automata and digraphs"

Connected through hyperedge HE-5 (induced by source paper "a new heuristic synchronizing algorithm"):
  with members:
    - "primitive digraphs with large exponents and slowly synchronizing automata"
    - "a fast algorithm finding the shortest reset words"
    - "approximating the minimum length of synchronizing words is hard"

Connected through hyperedge HE-6 (induced by source paper "the cerný conjecture for small automata experimental report"):
  with members:
    - "modifying the upper bound on the length of minimal synchronizing word"
    - "slowly synchronizing automata and digraphs"

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)