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: "an extension of data automata that captures xpath"
  Abstract: We define a new kind of automata recognizing properties of data words or data trees and prove that the automata capture all queries definable in Regular XPath. We show that the automata-theoretic approach may be applied to answer decidability and expressibility questions for XPath.

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 automaton over data words that captures emso logic"
    - "feasible automata for two variable logic with successor on data words"
    - "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 "definability equals recognizability for graphs of bounded treewidth"):
  with members:
    - "definability equals recognizability for k outerplanar graphs"
    - "structure theorem and isomorphism test for graphs with excluded topological subgraphs"

Connected through hyperedge HE-3 (induced by source paper "fo2 1 on data trees data tree automata and branching vector addition systems"):
  with members:
    - "bottom up automata on data trees and vertical xpath"

Connected through hyperedge HE-4 (induced by source paper "logics with rigidly guarded data tests"):
  with members:
    - "regular path queries on graphs with data a rigid approach"
    - "two variable logic with two order relations"

Connected through hyperedge HE-5 (induced by source paper "model checking parse trees"):
  with members:
    - "alternating register automata on finite words and trees"
    - "tulipa towards a multi formalism parsing environment for grammar engineering"

Connected through hyperedge HE-6 (induced by source paper "an automaton over data words that captures emso logic"):
  with members:
    - "relating timed and register automata"
    - "an optimal construction of hanf sentences"
    - "temporal logics on words with multiple data values"
    - "ltl with the freeze quantifier and register automata"

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.LO(Logic in Computer Science)