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: "what s decidable about parametric timed automata"
  Abstract: Parametric timed automata (PTAs) are a powerful formalism to reason, simulate and formally verify critical real-time systems. After 25 years of research on PTAs, it is now well-understood that any non-trivial problem studied is undecidable for general PTAs. We provide here a survey of decision and computation problems for PTAs. On the one hand, bounding time, bounding the number of parameters or the domain of the parameters does not (in general) lead to any decidability. On the other hand, restricting the number of clocks, the use of clocks (compared or not with the parameters), and the use of parameters (e.g. used only as upper or lower bounds) leads to decidability of some problems. We also put emphasis on open problems. We also discuss formalisms close to parametric timed automata (such as parametric hybrid automata or parametric interrupt timed automata), and we study tools dedicated to PTAs and their extensions.

Connected through hyperedge HE-1 (induced by source paper "consistency in parametric interval probabilistic timed automata"):
  with members:
    - "language preservation problems in parametric timed automata"
    - "language emptiness of continuous time parametric timed automata"

Connected through hyperedge HE-2 (induced by source paper "parametric verification an introduction"):
  with members:
    - "minimal time synthesis for parametric timed automata"
    - "offline timed pattern matching under uncertainty"
    - "language preservation problems in parametric timed automata"
    - "goal driven unfolding of petri nets"
    - "language emptiness of continuous time parametric timed automata"
    - "on selective unboundedness of vass"
    - "the parma polyhedra library toward a complete set of numerical abstractions for the analysis and verification of hardware and software systems"

Connected through hyperedge HE-3 (induced by source paper "parametric timed model checking for guaranteeing timed opacity"):
  with members:
    - "eliminating timing side channel leaks using program repair"
    - "adversarial symbolic execution for detecting concurrency related cache timing leaks"
    - "canal a cache timing analysis framework via llvm transformation"
    - "better abstractions for timed automata"
    - "control and synthesis of non interferent timed systems"

Connected through hyperedge HE-4 (induced by source paper "parametric updates in parametric timed automata"):
  with members:
    - "revisiting reachability in timed automata"
    - "language emptiness of continuous time parametric timed automata"
    - "mtl model checking of one clock parametric timed automata is undecidable"

Connected through hyperedge HE-5 (induced by source paper "parametric timed broadcast protocols"):
  with members:
    - "language emptiness of continuous time parametric timed automata"
    - "parameterized verification of safety properties in ad hoc network protocols"

Connected through hyperedge HE-6 (induced by source paper "parametric schedulability analysis of a launcher flight control system under reactivity constraints"):
  with members:
    - "interrupt timed automata with auxiliary clocks and parameters"
    - "parametric schedulability analysis of fixed priority real time distributed systems"

Connected through hyperedge HE-7 (induced by source paper "minimal time synthesis for parametric timed automata"):
  with members:
    - "language preservation problems in parametric timed automata"
    - "language emptiness of continuous time parametric timed automata"

Connected through hyperedge HE-8 (induced by source paper "parametric analyses of attack fault trees"):
  with members:
    - "time dependent analysis with dynamic counter measure trees"
    - "dag based attack and defense modeling don t miss the forest for the attack trees"

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)