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: "feasible automata for two variable logic with successor on data words"
  Abstract: We introduce an automata model for data words, that is words that carry at each position a symbol from a finite alphabet and a value from an unbounded data domain. The model is (semantically) a restriction of data automata, introduced by Bojanczyk, et. al. in 2006, therefore it is called weak data automata. It is strictly less expressive than data automata and the expressive power is incomparable with register automata. The expressive power of weak data automata corresponds exactly to existential monadic second order logic with successor +1 and data value equality \sim, EMSO2(+1,\sim). It follows from previous work, David, et. al. in 2010, that the nonemptiness problem for weak data automata can be decided in 2-NEXPTIME. Furthermore, we study weak B\"uchi automata on data omega-strings. They can be characterized by the extension of EMSO2(+1,\sim) with existential quantifiers for infinite sets. Finally, the same complexity bound for its nonemptiness problem is established by a nondeterministic polynomial time reduction to the nonemptiness problem of weak data automata.

Connected through hyperedge HE-1 (induced by source paper "reasoning about data repetitions with counter systems"):
  with members:
    - "demystifying reachability in vector addition systems"
    - "ordered navigation on multi attributed data words"
    - "an extension of data automata that captures xpath"
    - "an automaton over data words that captures emso logic"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"
    - "temporal logic with predicate abstraction"

Connected through hyperedge HE-2 (induced by source paper "weak and nested class memory automata"):
  with members:
    - "ordered navigation on multi attributed data words"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"

Connected through hyperedge HE-3 (induced by source paper "a decidable class of nominal omega regular languages over an infinite alphabet"):
  with members:
    - "an automaton over data words that captures emso logic"
    - "extending buchi automata with constraints on data values"
    - "safety alternating automata on data words"
    - "ltl with the freeze quantifier and register automata"

Connected through hyperedge HE-4 (induced by source paper "automata for two variable logic over trees with ordered data values"):
  with members:
    - "two variable logic with two order relations"
    - "safety alternating automata on data words"

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)